Introduced in iOS 7, iBeacon is a technology that enables new location awareness possibilities for apps. Using Bluetooth Low Energy (BLE), a device with iBeacon technology can be used to establish a region around an object. This allows an iOS device to determine when it has entered or left the region, along with an estimation of proximity to a beacon. Currently, even Apple is using third party Bluetooth beacons in its retail stores; however, it appears as though it has finally developed its own beacon.
The FCC filing reveals a circular device about 5.46" in diameter. It features a USB port and an ON/OFF switch. The official product number of the iBeacon is A1573.
It's unclear whether Apple intends to use its iBeacons for just its own retail stores or whether it will be available for developers to purchase as well.
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Read More [via TUAW]