U.S. retailer Macy’s is now selling a $100 leather wallet from Royce Leather together with a Bluetooth tracking tag from TrackR.
The TrackR wallet tag uses Bluetooth Low Energy (BLE) to connect to a dedicated smartphone app. The smartphone owner can remotely action the ring on its TrackR, locate the current (if within BLE reach) or the last location known of its wallet. Otherwise it can rely on other TrackR users that might approach the location of the lost wallet and automatically send an alert to the owner.
This later feature obviously will require a very large number of TrackR apps in the field to reach a probability to find back your lost valuables this way.