Came across the Software for the iPhone that works to keep your iPhone safe by sounding the alarm if it is moved from the stationary position you left it in.  

Product Description:

iWarnU harnesses the power of your iphone and turns it into a sophisticated alarm system. When the application is triggered (using the accelerometer) an alarm of your choice is activated. The alarm can also ring a nominated telephone number so you can listen into the phone itself! Your phone could be placed in a handbag, motor vehicle or just left on your desk, once moved it will sound an alarm, play and display a message or ring a nominated number. It will also log all movements of the phone showing date and time. iWarnU has hundreds of uses from security to practical jokes . . . it makes a great whoopee cushion!

$1.99 iPhone Applications now available at iTunes.com! Shop Now!