Visual Device Location Verification via Display Projection
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Solution Overview
Problem
Verifying the geographical location of a device without a geolocation system is challenging, as existing methods like IP address-based solutions lack accuracy and are not feasible with Internet Protocol Version 6 (IPV6), and implementing a geolocation system like GPS or Wi-Fi is expensive.
Innovation Solution
A system that projects a device location identifier (DLI) onto a display, which is captured by a mobile device using a localization function application, combining inputs from positioning systems like GPS and Wi-Fi to generate a location proof, including a visual indicator such as a QR code or characteristic signature, to verify the device's location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a geolocation system like GPS or Wi-Fi is implemented, then location verification accuracy is improved, but device cost increases
Solution Approach 1:
The patent introduces a display device as an intermediary that projects visual location identifiers. Instead of embedding GPS/Wi-Fi in the verified device, the system uses a display to project location-coded visual content that can be captured by a mobile device with positioning capabilities. This transfers the geolocation function from the verified device to the verification ecosystem.
Solution Approach 2:
The patent creates visual copies of location information through projected images or videos containing encoded location data. The mobile device captures these visual copies to verify location without requiring the verified device to have native geolocation hardware. The visual projection serves as a copy of location credentials.
2Device complexity
If IP address-based localization is used, then device complexity is reduced, but location accuracy deteriorates
Solution Approach 1:
The patent segments the location verification function into two parts: the verified device simply displays location-coded visual content without needing complex geolocation hardware, while the mobile device performs the actual positioning using its existing GPS/Wi-Fi capabilities. This segmentation allows the verified device to remain simple while achieving accurate location verification through the partner device.
Data Source
AI summary
Verifying that a first device is in a claimed location including: requesting the first device to display a device location identifier (DLI) on a display; sending a request to a second device to: (1) capture the DLI displayed on the display; (2) receive inputs from at least one positioning system and the captured DLI; and (3) output a location proof using the inputs; and receiving the location proof to initiate a verification of the claimed location of the first device, wherein the location proof includes the captured DLI and a captured location.