I think Bluetooth Low Energy (BLE)[0]is really cool and has the possibility to enable many many cool devices. The low power requirements allow devices to run fo

I think Bluetooth Low Energy (BLE)[0]is really cool and has the possibility to enable many many cool devices. The low power requirements allow devices to run for weeks on a button cell, and the fact that it uses the same hardware as the original bluetooth implementation mean devices only need software updates to enable it. The latest iPhones have BLE support, and google added BLE support in android 4.3[1]. BLE is already used in devices like the Pebble Watch. If you are interested in hacking with a BLE device, check out the SensorTag[2] from TI. Its a tiny $25 board that contains a whopping six sensors: * IR temperature Sensor (contactless temperature measurement) * Humidity Sensor * Pressure Sensor * 3-axis Accelerometer * Gyroscope * Magnetometer They also provide example iOS and android source code. You can download the iOS app in the app store. [0] http://en.wikipedia.org/wiki/Bluetooth_low_energy http://en.wikipedia.org/wiki/Bluetooth_low_energy [1] http://developer.android.com/guide/topics/connectivity/bluetooth-le.html http://developer.android.com/guide/topics/connectivity/bluet... [2] http://www.ti.com/tool/cc2541dk-sensor http://www.ti.com/tool/cc2541dk-sensor