Many public devices are developping with the bluetooth low energy technology among them:
– Biiwatch by SmartMobileAccessoire: www.smartmobileaccessoire.com
– Smart-Button by Movon
Let compare PCB of Biiwatch and Smart-Button
Biiwatch uses the bluegiga technology (BLE 112) and Smart-Button uses the Texas Industry shipset.
The BLE112 more protect the people about the effects of the spreading of the wireless network.
There are the simple button for the smart-button and the connector for the keypad for the Biiiwatch.
Everybody, people like more the keypad. The keypad is fun and more simply to use.
In add, Biiwatch is the outdoor device and I think smart-button is more indoor device.