Google released a new app, the Android Device Manager. With it, users can locate and ring a lost phone or tablet remotely.
If your device has been misplaced in your home, simply get online from another device and the service can ring your phone.
The app also uses a map to show exactly where your device is.
You can also delete the phone's data remotely, however, it should be authorized on the phone or tablet before-hand.
Find out more at https://www.google.com/android/devicemanager.