Using a first wireless link to exchange identification information used to communicate over a second wireless link

What is this patent about?

’913 is related to the field of proximity-based wireless networking and mobile social interaction. It addresses the limitations of GPS-based location services, which often fail indoors, and pure peer-to-peer networks that struggle with data persistence, security, and identity verification. The invention provides a framework for devices to discover each other locally while offloading the actual data exchange and identity management to a secure, centralized infrastructure.

The underlying idea behind ’913 is the decoupling of proximity detection from data communication by utilizing a dual-radio architecture. A short-range radio, such as Bluetooth or Wi-Fi, is used exclusively to broadcast and detect simple, rotating identifiers from nearby devices. Once a neighbor is detected, the device switches to a long-range wide area network (WWAN) to communicate with a central server, which acts as a trusted broker to validate identities and facilitate secure transactions or social interactions based on pre-defined privacy policies.

The claims of ’913 focus on a method and apparatus for managing server-side inquiries through an action function that filters redundant local detections. Specifically, the independent claims cover a device that receives a unique identifier over a short-range link, fetches related entity information from a server via a different protocol, and then uses a comparison logic to suppress subsequent server requests when new identifiers are detected. This mechanism ensures that the device does not overwhelm the wide area network with repetitive queries for the same proximal entities.

In practice, the system functions by having a mobile device scan for local MAC addresses or SSIDs that serve as temporary aliases. When a match is found, the device sends this alias to the server, which checks a policy assignment list to determine what information—such as a name, photo, or merchant menu—can be disclosed. This allows for secure e-commerce, such as paying a street vendor or unlocking a rental car, where the server provides a visual cross-verification of the parties to prevent fraud without requiring the devices to establish a direct, insecure data link.

This approach differs from prior art by eliminating the need for GPS and solving the anonymity problem inherent in static peer-to-peer identifiers. By using a centralized identifier manager, the server can periodically rotate the broadcasted IDs, ensuring that a user’s movements cannot be tracked by unauthorized third parties. Furthermore, because the substantive data flow occurs over the cellular network rather than the local link, the interaction can continue uninterrupted even if the two users move out of physical proximity.