Pressy is a tiny yet powerful gadget for Android phones.

Plug pressy into your android smartphone to get an extra customizable button on your device. With pressy button you can -
1. Take instant photos/videos
2. Start voice recording
3. Change phone settings
4. Turn on the flashlight
5. Run any App
6. Send current location
7. Toggle wifi/bluetooth connection

Pressy works only on Android. Check if your device is compatible with Pressy here

http://get.pressybutton.com