No keys left behind…or purse, or tablet, or child. The new iSpot reminder device uses Bluetooth connectivity to ring your smart phone when you wander out of range of your valuables. About the size of a quarter, the iSpot can attach to a key chain or slip into your child’s backpack during park outings. When the iSpot leaves your range of sight – about 20-30 feet – the iSpot will ring your smart phone and send a screen warning message. What an awesome versatile product!