It's a alarm for your ipod touch that detects people and a siren go's off when it detects somebody. Your thinking that it is impossible for an ipod touch to do this well here is how it does it: You know in the top right corner of your ipod, above the screen, is a circle. It may be hard to see but to have proof in some ipod touch cases like ipodtouchmaster's silicon case. There is a hole for the circle to see. That circle detects the light that is around it to change the screen's brightness to save battery. So when a person walks by the shadow of the person is detected by the ipod setting off a siren Please Register or Log in to view images , and the only way to turn the siren off is to type your 4 digit # password in. Since an alarm would be on a long time like at night to save the battery make sure to make it so it is in a special sleep mode when it is armed. Also you would be thinking that ipod touchs dont have internal speakers well you can buy them at radioshack and plug it into the speacker jack so it can play outloud. Thank you for your time for reading this and I hope somebody will make ipod touch alarm application Please Register or Log in to view images .