Android browser application full screen jobs

...Devices are to pair via the screen of the 484 through local wifi credentials input. The user should be able to add as many senses as the described setup would allow. I want the sense default state to be deep sleep, awoken by the detection of sound based on a threshold. Upon a given sense being awoken, it begins camera web server and turns on the light connected to that senses pins. *is it possible for it to stream audio also? The idea being the speakers attached to the 484 output sense microphone audio. Only if hardware allows (given consumption implied by these project details), include the A.I object and face recognition features to be included for the sense. The 484 should display the video stream of the latest activated sense, which can be maximised to full scre...

I'm looking for a skilled React Native developer to create a mobile app that focuses on e-commerce. The app must be available on both iOS and Android platforms. Key features and requirements: - E-commerce: The main purpose of the app will be to allow users to shop for products. - User profiles: I need basic customization options for user profiles. This includes the ability to set a profile photo and write a bio. - Pay for parking. QR code to scan at park location for paid parking access. - Domestic flight departures/arrival – display on-time or delayed schedule (updates provided by airlines?) - Pay for baggage trolleys at airports? – QR code for confirmed payment - Where to shop and dine at airports (paid marketing)- - - - Expedited access to security screening ...

I'm in need of an experienced developer to create a cricket-themed gaming application for both iOS and Android. The game will be a crucial part of my business, so I'm looking for someone who can deliver a high-quality, engaging, and bug-free product. Key Points: - Development for both iOS and Android: Prior experience in cross-platform development would be a plus. - Expertise in Game Development: A solid background in creating mobile games, especially sports-related ones, is essential. - Understanding of Cricket: A deep understanding of the sport of cricket is preferred to help make the game more authentic and engaging. - UI/UX Design: A good eye for design and user experience is necessary for player engagement and retention. If you think you have the exper...

...to create a hyper casual game for both iOS and Android platforms. Required knowledge in Unity/Godot and relative development languages. Key Requirements: - Cross-Platform Development: The game must be developed for both iOS and Android platforms, ensuring a seamless user experience. - Hyper casual Game Design: The primary goal of the app is to develop an engaging hyper casual game. This will involve creating a simple, yet addictive game that can be played in short bursts. Game GDD and artistic assets are provided from the creative team. Ideal Skills and Experience: - Experience in Mobile App Development: Prior experience developing games for mobile devices is highly preferred. - Cross-Platform Development: Proficiency in both iOS and Android development is essen...

I'm in need of a full-stack developer who is proficient in Flutter for a mobile app development project. Requirements: - Full-stack developer: You should be experienced in both frontend and backend development - Flutter proficiency: You must have solid experience and expertise in using Flutter for mobile app development In this role, you will be responsible for: - Developing a mobile application from scratch using Flutter - Designing and implementing both the frontend and backend of the app - Ensuring the app is functional, user-friendly, and meets the project requirements Ideal skills and experience include: - Proficiency with Flutter for mobile app development - Proven experience as a full-stack developer - Strong capabilities in both frontend and bac...

I am looking for a skilled developer to create a food ordering and restaurant management app for both iOS and Android platforms. Key features should include: - Ability for menu customization - Order tracking capability - Integration of reservation management system. Your experience in developing similar mobile apps plus a good understanding of user experience design will be critical for this project. Database management skills and familiarity with GPS functionalities for real-time order tracking would be advantageous. This project requires timely delivery, so your ability to meet deadlines will be highly valued.

I'm in need of an app developer who can create a fully functional Android app similar to Blinkit. While I will be providing the design assets, the selected freelancer will be responsible for translating these into a comprehensive and intuitive user interface. Key Features: - Ordering groceries: The app should allow users to browse a selection of products and place orders seamlessly. - Order tracking: An essential feature that enables users to monitor the status of their orders in real-time. - Product browsing: A smooth and visually appealing interface that facilitates easy product discovery and selection. Ideal Skills & Experience: - Proven experience in Android app development, preferably with e-commerce or grocery delivery app projects. - Strong UI/UX design back...

PLEASE READ BEFORE BIDDING & BID THE EXACT VALUE. I am looking for a iOS & Android App that can work on Mobiles & Tablets I have attached a Salon Service list, this need to be developed as an App where the customers can view on Mobile and Tablets. PLEASE SHARE YUR APP WORK SO THAT I CAN UNDERSATND YOUR COMPETENCY. Key Features: - The app should have a clean, modern and minimalist design. - It needs to be compatible with both iOS and Android platforms. Ideal Skills and Experience: - Proven experience in mobile app development, especially for both iOS and Android platforms. - Strong UI/UX design skills to create a modern and minimalist app in line with my vision. Please note that the app will not include any booking or review/rating functions - it ...

As a client looking to ensure the reliability and effectiveness of my operations, I need an advanced Android emulator expert. The primary focus of this role will be on using emulators to access banking apps via desktop. Skills & Experience: - Comprehensive knowledge of Android emulators. - Expert in various Technicalities like rooting and Magisk - Proven experience in debugging Android applications. - Strong ability to optimize emulator performance. Please note, only advanced level candidates with relevant experience should apply. This is a critical role that requires keen attention to detail and a high level of expertise on Android emulators.

Ease and flexibility of use by the site administration.    - A comprehensive control panel for dynamic content management.    - Multiple authority levels (manager, editor, publisher, etc.).    - An easy and integrated system for managing multimedia (images, video, etc.).    - Flexible tools for publishers enabling review and scheduling.    - Compatibility with C3W standards for cross-browser functionality.    - Possibility of future development without impacting existing content.    - An excellent, search engine-friendly system for periodic archiving of content (SEO).    - Multilingual support (Arabic - English).    - Design meeting standards for speed and ease of browsing.   &nb...

...are the main components and requirements for the project: - Development of three linear graphs: The platform will feature three line charts for displaying market data. These charts should be clean, visually appealing and designed to be easily readable by users. - Interactive graphic element: A key feature of the platform will be an interactive graphic element that users can draw anywhere on the screen. This element should be fully customizable, with the ability to be resized, dragged and dropped, and change color. It's important that this feature is intuitive and user-friendly. - Visual design: The platform should have a frontend that is visually appealing and designed in pastel colors. The overall look and feel of the platform should be modern and professional, providing...

As an e-commerce business, I urgently need an android app developed with an aesthetically pleasing user interface. I have purchased code assets from CodeCanyon that will present up-to-date UI/UX design. The app needs to be built and aab. Your role will involve using the code I provide to create a market-leading e-commerce app. The intended features of the app are: • Product search and filtering • Shopping cart and checkout • User reviews and ratings The ideal candidate is intimately familiar with the Android platform, possesses strong coding skills, and has both experience and knowledge of UI/UX design. They should be able to take the provided code, understand it, and transform it into an operational and attractive e-commerce platform. The de...

It is necessary solve some few errors that have my application. It is necessary experience in laravel coding. Please send me your experiences in complex coding not simple web). If you show me the experiences, I will send the details of changes

I'm looking for an experienced photographer, ideally with a background in corporate photography, who can able to capture specific elements of a company located at 122 Leadhall street, London, United Kingdom EC3A 8AB. Specifics to photograph include...authenticity of the company. Photographers with a comprehensive understanding of image copyright laws in the UK, and those located in or near London, would be preferred. Allowance made for reasonable travel expenses. These photos will be used for research purposes and, therefore, your discretion and professionalism are imperative. Final deliverables should be high-quality, digital files suitable for screen viewing. Thank you in advance for your consideration. I look forward to viewing your portfolio and discussing this oppor...

Deliverables - Full fledged and mobile app (ios&android) with admin backend pannell. - Nearby Store locator - User can place a order with the combination of 3 (ex. Customer will chose part 1 of order from the multiple options, after selecting part 1, user will choose part 2, then part 3 from multiple available options and each item from each part will include individual cost and after choosing all 3 combinations it will be redirected to checkout page which includes all the details of selected items including cost breakdown, afterwards to payment page. - Web and app includes trending section, offers sections, trending designer collection section. - Blogs. - Gift cards. - influencer affiliate program. - Basic pages such as, contact us, about us, customer support,...

I'm looking for a skilled programmer to help me convert my invention into an app for iOS and Android devices. Key requirements: - I'm open to the programming language, so your expertise in Swift, Java, or C# would be beneficial in guiding the decision. - The app should ideally be designed to work offline, although this requirement can be discussed. - The main functions the app should possess are user authentication and data storage. It is preferred that you are located in Southern California, specifically in San Diego, CA. If that is not a reality, then I will still move forward. If you've got experience in app development and can help me bring my invention to life on mobile devices, please reach out. Looking forward to working with you!

I'm looking for a proficient React developer to help implement the frontend of a single page application. The wireframe is ready and this will be a client-side rendered app. It is designed in Figma and you will gain access to the design pages. In the project, some animations have to be implemented which are mostly simple css animations (e.g button color transitions and smoothly opening dropdown / dropup menus). There will be some real time string data that has to be displayed. However, this project is only about creating the components and the animations with the relevant hooks / states so that in a subsequent step, the backend data can be displayed. Other than displaying the dropdown menus, dummy pages should be displayed in the workspace when some of the buttons are pressed...

We are in need of a Point of Sale (POS) software that's compatible with both iOS and Android platforms. Key Features Required: - Inventory Tracking: The software should efficiently track every piece of inventory and maintain records in real time. - Customer Management: It should have features to manage customer information effectively and to capture their buying trends. - Receipt Printing: The software needs the capability to print receipts after every transaction. - Kitchen Display/Printer: A feature that allows displaying orders in the kitchen and initiate printing commands accordingly would be highly beneficial. Freelancers with relevant experience in POS software development are particularly encouraged to apply. Please include a detailed description of your experienc...

I'm in need of a comprehensive website that can serve as both an ecommerce platform and an informational hub. Here's what I'm looking for: Key Features: - We need a user-friendly and fully responsive ecommerce section that includes: - Product listings: You will be responsible for setting up and structuring our products in a logical and attractive way. - Shopping cart and checkout process: The platform should be able to handle complex transactions and offer a seamless checkout experience. - User registration and login: Users should be able to create accounts, log in, and manage their personal and purchase information securely. - Website Security: Ensuring that the website is secure is critical. I'm looking for a developer who can implement strong security measure...

We are looking for a remote Swedish speaker operator for a customer service job . 8 hours/day, Monday - Friday. Central Europe working hours. Inbound and email customer service for an online shop. 1 week test. Bid with your cheap cost per 10 hours. Please write a couple of line of your self or better send a CV. Thank you

...candidate should have a strong understanding of data scraping and email handling. The aim of the project is to: - Extract and display specific emails from Gmail in a user-friendly card format within an application grid. - The information to display on each card will include part of email body, phone numbers and web links. The phone numbers should be displayed in a clickable link format so that they seamlessly work with a soft phone application like RingCentral without need to use their API. Emails containing web link will have the option to automatically open the link in new tab in default browser. Skills required: - Proficiency in data scraping - Experience with Gmail API - Excellent knowledge in Python or any other similar coding language - Understanding of UI ...

I am looking for someone skilled in the field of STM32 programming, with expertise on Wiz5500. We already have a working firmware running on our custom PCB that uses the Wiz5500 to display a web page with basic interfaces. The project consists in modifying that firmware to integrate two new features : 1) After sending data from webpage to mcu, we cannot use the web browser refresh button because it re-sends the data again. We want to fix this by either re-directing automatically to the main webpage after sending data or some other way you can propose. 2) We want to synchronize the mcu with the local time. This can be done by synchronizing with the NTP server or some other way you can propose. We would like the webpage to keep working during the synchronization with NTP serve...

Small update to the android app. Change the payment gateway "cryptomus" to stripe. After that. Compile the code to obtain the apk version and an .aab version that will be used in the Google Play Store. In turn, upload the updated code to the app server. Send me the updated source code as well. The app is made on react Native, and the backend is Python. All the API's are made on Python. Maximum budget $300

I'm seeking an Android app automation expert who can assist in automating my app to communicate with other apps. The automation is specifically required to simulate user input, and the app should work in the background. Key Responsibilities: - Automate my Android app to interact with other apps by simulating user input - Ensure the automation works seamlessly in the background Skills and Experience Required: - Proficiency in Android app development and automation - Strong understanding of app communication and user input simulation - Experience in developing apps that work efficiently in the background - Knowledge of best practices for app automation and user experience Please ensure to include your relevant experience in your proposal.

I am in need of an expert to develop a state-of-the-art self-ordering kiosk for a restaurant setting. The preferred interface for this project is touch screen. Key Requirements: - The developer should have extensive experience in User Interface (UI) design to ensure a smooth, intuitive customer journey. - Experience with self-service kiosk software, especially within the hospitality industry, will be highly beneficial. - Knowledge of secure payment processing methods is crucial. This project is not merely about functional design; it requires creativity and finesse to create a user-friendly and appealing end product. Looking forward to your proposals!

I'm looking to hire a freelance Android developer for a quick task to update my QRNG generator mobile app. Most of the codebase required to implement the functionality is already provided. You will need to make necessary adjustments and enhancements to the existing code to align it with the updated requirements and ensure its compatibility with the latest Android standards. Requirements: 1) Textbox Input: Include a textbox for users to enter the size and filename. 2) Byte Stream Generation: Generate a byte stream from /dev/qrandom based on the entered size. 3) Display Byte Stream: Upon clicking the 'Generate' button, display the byte stream in a scrollable textbox below the button. The display should format the bytes in lines across the screen, removin...

As a manager of a web application designed for content sharing amongst a specific professional group, I'm seeking an experienced Functional Test Manager. The chosen candidate will have: - Extensive experience testing web applications, particularly those used for content sharing - A deep understanding of how a specific professional group interacts with digital tools - Proven ability in identifying and troubleshooting web application glitches. The responsibilities will include: - Implementing a comprehensive functional testing strategy - Analyzing and reporting on application performance - Collaborating cross-functionally to ensure a seamless user experience for our professional members. Your mission is to confirm the usability and efficiency of the web ap...

...Nile(). The ideal candidate will have a proven track record in developing modern, responsive, and visually appealing websites with a strong focus on user experience and performance. Responsibilities: Translate requirements and mockups into fully functioning websites using HTML/CSS/JavaScript. Implement responsive design to ensure the website works seamlessly on various devices and screen sizes. Optimize website components for maximum speed and scalability. Ensure all aspects of the website are thoroughly tested and debugged. Collaborate with stakeholders to understand their goals and visions for the site. Skills and Qualifications: Ability to work efficiently under tight deadlines. Excellent communication skills in English, both written and spoken. Project Duration: [Specify

I'm on the hunt for a developer who is proficient in creating Chrome extensions. The project involves developing a Chrome extension compatible only with the Google Chrome web browser. Given I haven't specified the exact functionality for this extension, I'm open to proposals. Whether your expertise lies in auto-filling forms, ad-blocking, tracking browsing history, or any other dimension, feel free to pitch your ideas or past works that align with these functionalities. For this job, successful applicants should ideally have: - Ample experience in Chrome extension development. - A portfolio of past works to showcase their skills. Freelancers interested in this project are expected to include their experience related to Chrome extension development in their appli...

I'm seeking an advanced C#/ C++ developer with prior experience in creating desktop applications on Windows. Familiarity with TWAIN integration is crucial. Key Requirements: - Advanced C#/C++ Knowledge: The ideal candidate should be comfortable and well-versed in advanced C++ concepts. - Windows Desktop Application Development: Previous experience in developing desktop applications on Windows is a must. - TWAIN Integration: You should have prior experience integrating TWAIN for image scanning functionalities. This is a challenging project that requires a high level of expertise in C#/C++ and experience in developing Windows desktop applications, particularly with TWAIN integration. If you're confident in your skills and have a solid track record in similar projects, I&#...

I am in need of an Android mobile app with a focus on push notifications. This project requires: - Proficiency in Android app development. - Knowledge and experience in integrating push notification systems. - Ability to create an attractive and user-friendly interface. Previous experience creating similar apps would be beneficial. Being creative and paying attention to details are essential skills for this project. Looking forward to an excellent collaboration.

I'm in need of a competent game tester who specializes in performance testing. The game we're working on is specifically for Android. Key Responsibilities: - Test the game's performance on Android devices, focusing particularly on frame rate. - Report any bugs or performance issues discovered during the testing process. The ideal freelancer should: - Have demonstrated experience and expertise in game testing, particularly on Android platform. - Be proficient in performance testing with a focus on frame rate. - Possess excellent attention to detail, ability to identify and document issues accurately.

I want to use Microsoft power automate for a simple RPA on my desktop browser. I want to repeatedly run a search on 6 websites which are clerk of court websites because I am an attorney trying to reach prospective clients who have recently been sued. My goal is to launch and sustain a mail merge campaign to these prospective clients. So I need to automate a regularly occuring search for the most recent lawsuits that are filed on these clerks' websites and extract the defendants' names, mailing addresses and case numbers. The only problem is that the addresses are not found neatly on the web pages of the search results, but they must be extracted from individual PDF documents by going into each individual case docket and opening a certain document called a summons, which wi...

I'm seeking an expert Android app developer for the creation of a mobile application focused on Bluetooth Beacon (BT Beacon) functionality. Your primary task will involve: - Designing and developing an Android app from scratch. - Implementing BT Beacon technology impeccably into the app's functionality. Ideal candidates for this project should have: - Deep knowledge and proven experience in Android app development. - Previous experience working with BT Beacon technology. - Strong understanding of user-interface design for mobile devices. - Ability to communicate complex technical issues succinctly and clearly. I look forward to your imaginative solutions in incorporating Bluetooth Beacon effectively into our app!

I'm looking for an expert Android app developer to create a user-friendly mobile application with the following features: - In-App Purchases: I want the app to support in-app purchases to allow users to buy additional features or content. - User Registration and Login: The app will require a simple but secure user registration and login system. The ideal candidate for this project should have: - Proven experience in Android app development, with a strong portfolio of previous work - Experience with integrating in-app purchases - Knowledge of user registration and login system implementation in Android - Excellent communication skills and the ability to work collaboratively to bring this project to life.

We're looking for multiple competent native English editors to trim content and help us improve English language usage across a large batch of tutorials. Starting with a paid trial. Please bid $18.

I am looking for a full-stack developer to complete a web app developed in Laravel and React.js

I'm looking for a skilled UX/UI designer to enhance the user experience of my upcoming Android application. Key Requirements: - Experience: I expect you to have a strong portfolio showcasing the design of user-friendly, intuitive and visually appealing apps. Previous work on minimalist and modern designs would be a plus. - User Experience: The primary focus of this project is crafting an interface that provides a smooth and pleasant user journey. Your design should be aimed at making the app easy to navigate and enabling users to interact seamlessly with the functionalities. - Creativity: While the app aims for a minimalist style, I value creativity and innovation. I'm open to suggestions on how to improve the overall attractiveness of the app. - Design will requi...

I'm seeking a meticulous and experienced tester who can evaluate my mobile app. The primary focus will be on both Android and iOS, with a specific requirement for testing on iOS 14. Key Requirements: - Test the mobile app thoroughly on Android and iOS platforms. - Prior experience with testing mobile applications is a must. - Specific experience with iOS 14 testing is highly preferred. - Ability to provide detailed bug reports and suggest improvements. Your role will be crucial in helping me identify bugs and issues that may affect user experience, helping me deliver a high-quality product to my customers. Your expertise and attention to detail will be highly valued.

...web designer and developer to help create a website for my education consulting services. Key Requirements: - **Design-Oriented:** I need a modern, clean, and professional website design that reflects the credibility of my services. - **User-Friendly:** It should be intuitive and user-friendly for my potential clients. - **Responsive:** The website must work smoothly across various devices and screen sizes. - **SEO Optimized:** Basic SEO practices should be implemented to improve the website's visibility. Ideal Skills and Experience: - Proficiency in both web design and development. - Prior experience in creating educational websites or similar. - Strong understanding of user experience design. - Knowledge of SEO best practices. If you're able to bring creativity, t...

I am in need of a skilled API developer to extend functionalities of my Android app. Without any specific requirement for API functionalities or programming language, I welcome freelancers with any and every kind of expertise in API development. Ideal candidates will have a firm understanding of API integrations, both standard and third-party, with the ability to implement real-time updates, push notifications, and seamless data synchronization. Interested bidders should showcase their knowledge of various programming languages, and illustrate their past experience with mobile app development, particularly in Android. Your input on the project will be highly valued as the specific functionalities needed are yet to be determined.

...international customers. Requirements: - E-commerce orientation: The website must have all the essential functionalities of an online store, with an emphasis on a seamless shopping experience. - Integration of a payment gateway: You will be responsible for the integration of a secure payment gateway. - Responsive design: The website should be accessible and visually appealing on different devices and screen sizes. - User interface: The design should be intuitive and easy to navigate for users of all experience levels. - Consideration of the target audience: the design should be tailored to local and international customers, taking into account potential variations in user behavior and preferences. Ideal skills and experience for this project include: - Proficiency in e-commerce w...

I'm looking for a skilled Flutter developer to create a cross-platform app for iOS and Android with push notifications. Key Requirements: - The app should be developed using Flutter, ensuring seamless functionality on both platforms. - The core feature to be integrated is push notifications, so experience in push notification integration will be highly valued. - The app should be designed to support future expansions and updates. Ideally, you would have: - A good understanding of mobile software development, particularly with Flutter. - Experience with push notification services and their integration within mobile apps. - A portfolio showcasing your previous projects, with a focus on cross-platform app development. Please note that the designs for the app are currently not a...

Responsibilities: - Lead the development and integration of user interfaces in Unity for a computer vision application. - Provide expert guidance in the architecture and design of software built on the Unity platform. - Collaborate with the engineering team to integrate advanced image processing algorithms seamlessly with Unity. - Establish and maintain best practices for Unity development and version control within a shared workspace. - Optimize performance and memory usage of Unity applications dealing with large-scale data processing. - Train and mentor team members on Unity-specific skills and practices. - Manage code repositories, ensuring robust version control and efficient collaboration across teams. - Troubleshoot and resolve any Unity-related issues that affect project tim...

I require an expert who specializes in LinkedIn job applications. Your task will be to apply for senior/executive level positions in the IT and software development field on my behalf. The ideal candidate will have a proven track record in successful LinkedIn job applications and should have a deep understanding of the specific requirements for senior/executive IT roles. Must be able to work using anydesk(remotely). Daily 3-5 hours.

I am looking for a skilled web developer to develop a web-based multi-asset portfolio tracker application. The application will allow users to track investments in stocks, mutual funds, bonds, and other assets. Key functionalities will include: User account creation and management Portfolio management and tracking Automatic data import from various sources (PDF, Excel, etc.) Performance tracking (absolute gain, XIRR, etc.) Integration with financial data APIs (optional) Tech Stack: Back-End: Django (Python) Front-End: React Database: PostgreSQL (open to discussion) Your Responsibilities: Collaborate on the development roadmap for the application's core functionalities. Develop the back-end logic using Django, focusing on user management, portfolio models, and data im...

1. Install this app. 2. select one logo. (Edit logo screen) need all functions / you can say a replica of that screen and function now I need this screen. where you can add new graphics, text, and bg. after that, when you add graphics, you see some functions like shadow, colour, curve, and more. I need the same option and function. check the details in detail. no fully functional app is needed. We just need a screen which offers logo modification functions. take your time and share me the list of which things(functions) are included and your best price for this project with the timeline. Thank you

I have a logo I've created that I need to be made usable for printing on various types of merchandise. This includes T-shirts, Mugs, Hats, Sports shakers, log books, hoodies jackets, and bags. Key requirements: - Work on converting the camera/ screen shot logo image I have into a format that is suitable for printing on merchandise. - The timeline for this project is ASAP. You should ideally have experience in graphic design, especially with the conversion of logos for printing. Familiarity with the various types of merchandise and their specific requirements for printing would be a great advantage. Please let me know if you think you're the right person for this job.

I have an urgent need for an experienced Ionic developer to help me get my app live on both IOS Appstore and Android Playstore as soon as possible. The app needs to be updated from an older version to the latest one as well. The project entails: - Ensuring the app is compatible with both iOS and Android - Meeting the necessary app store requirements for submission - Ensuring the app has a clean and user-friendly interface - Testing the app for bugs and issues Ideal candidates should: - Have a strong portfolio of previous Ionic app development - Be familiar with app store submission processes - Be able to work quickly and efficiently - Have experience in user interface design - Have experience in app testing and bug fixing This is a time-sensitive project, so please only a...

I am looking for a proficient cyber security researcher with an emphasis on securing various applications. The scope of work includes web applications, mobile ...security vulnerabilities specifically: cross-site scripting (XSS), SQL injection, and session hijacking. - Devise strategies to enhance the security of all our applications. - Regularly conduct security checks to identify potential threats. Ideal skills: - Proven experience in securing different application platforms. - In-depth understanding of XSS, SQL injection, and session hi-jacking. - Comprehensive knowledge of network security and data protection. I need someone who is adept in application security to safeguard our digital assets. Your expertise will play a fundamental role in establishing the security of ...