Location-Based Content Access via Device Key Authentication
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Solution Overview
Problem
Current methods for location-based access management of digital content on mobile devices are inadequate, as they either restrict access to limited on-site devices or require repetitive network downloads, consuming bandwidth and risking copyright infringement.
Innovation Solution
A method using a device key generated from a short distance communication node identifier and a mobile device identifier for authentication, enabling secure access to encrypted content, with content keys that expire if the user leaves the designated area, ensuring secure and location-based access management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If on-site devices are used for location-based content access, then content security is improved, but device availability and user convenience deteriorate
Solution Approach 1:
The patent applies copying by allowing users to download encrypted content to their personal mobile devices instead of requiring them to use on-site devices. The content is copied to the user's device in encrypted form, maintaining security while improving device availability and user convenience
Solution Approach 2:
The patent segments the content access system into two parts: encrypted content stored on the user's device and decryption keys controlled by the location-based authentication system. This segmentation allows the content to be available on personal devices while maintaining security through key control
2Quantity of substance
If content is streamed to RAM for continuous playback, then device storage requirements are reduced, but network bandwidth consumption and server burden increase
Solution Approach 1:
The patent applies preliminary action by downloading and storing encrypted content on the user's device before playback. The content is prepared in advance and stored locally in encrypted form, eliminating the need for continuous network streaming and reducing bandwidth consumption
Solution Approach 2:
The patent changes the parameter of content storage from temporary RAM storage to permanent encrypted storage on the device. This parameter change allows content to be stored locally without consuming network bandwidth during playback
3Adaptability or versatility
If unencrypted content is transmitted over the network, then user device compatibility is improved, but copyright security deteriorates
Solution Approach 1:
The patent applies local quality by encrypting content with device-specific keys that are unique to each user's device. The encryption is tailored to each device, ensuring both security and compatibility. The content remains in encrypted form during transmission and is only decrypted locally on the authorized device
Data Source
AI summary
Methods and apparatuses for located-based content access control have been disclosed. A method may comprise: receiving, at a mobile device, from a short distance communication node, an identifier of the node; generating a device key for the mobile device based on the identifier of the node and an identifier of the mobile device; sending to the node the device key and the identifier of the mobile device, at least based on which the mobile device may be authenticated; and receiving, at the mobile device, from the node, one or more content keys, either encrypted or unencrypted, for decrypting content that has been or is to be saved in the mobile device.