Lost my cell

Recently I bought a fancy cell (Motorola Razor). Yeah!! the one which you see in the ad. of Abhishek Bachan.
Aryan is very fascinated with its ring tones. When I get call, I turn on my speaker and he listens it with pushing his ear nearer to the cell and gets bit disappointed when the call ends. Sometimes he gets cranky and I have to call at other cell and he loves "Hellu" "Hellu". He watches those coloured wallpapers with great curiosity. He enjoys pressing buttons and has called some junk numbers (234). Hmm I need to explore and find out ways to lock the keypad. Otherwise someday I will find cop coming to my house in respond to 911 being pressed accidently.
This weekend I was going to Pratt Library and was looking for my cell. I searched all the places where I normally keep but without any success. I had seen him playing with it in the morning so was sure he has kept it somewhere. But little angel was busy in his toys free from all worries :-)
Then I made call from other cell and I found out that he had pushed it under the rack :-)
It's so easy to track lost cells just wondering whether everything I use had similar mechanism to track I would had saved lot of time :-)