Turn your old mobile into an alarm system

Salient Eye will turn your old Android phone into an intruder buster, making a noise if an inturder is spotted, meaning you don't have to splash out on an expensive CCTV system.

The app uses the camera on your phone as a motion detector. It will then take a photo and email it to you automatically, or send you an SMS.

Without a power source it will last for up to 10 hours and will work even when the device's screen is turned off.