Limited Input Device Authentication via Mobile Intermediary
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Solution Overview
Problem
Limited input devices, such as digital cameras, face difficulties in user authentication due to their minimal interface, making it inconvenient for users to enter credential information for secure association with a user account.
Innovation Solution
A method where a limited input device communicates with an application on a client device to authenticate using a one-time authorization code, allowing the application server to verify the device without requiring extensive user input on the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If authentication protocols requiring credential input are used, then security is improved, but ease of operation deteriorates due to limited input options on the device
Solution Approach 1:
A mobile device application serves as an intermediary between the limited input device and the authentication server. The mobile device receives and processes credential information from the user, then communicates with the server on behalf of the limited input device, eliminating the need for direct credential input on the device itself.
Solution Approach 2:
The authentication process is segmented into separate functions: the limited input device only needs to provide a device identifier, while the mobile device application handles the complex credential input and authentication protocol communication, dividing the authentication task between devices based on their capabilities.
2Reliability
If extensive user input is required for authentication, then authentication security is improved, but device complexity increases due to additional input controls
Solution Approach 1:
The mobile device acts as an intermediary that handles all complex authentication interactions, allowing the limited input device to maintain its simple design while still achieving secure authentication through the intermediary's capabilities.
Solution Approach 2:
The mobile device application performs the authentication service independently, managing credential input, protocol communication, and server interaction without requiring the limited input device to have advanced input capabilities.
Data Source
AI summary
A limited input device, such as a camera, is authenticated based on a request received from an authenticated application. The camera provides an authorization code to the authenticated application and receives an access token. The access token is associated with a user account. The access token is received based on a verification of the authorization code. The camera transmits one or more images associated with the user account to the first device based on the verification.