Abstract: A system for detecting a child left in a vehicle, in a coin-like shaped housing, includes: at least two disparate sensors for measuring parameters within a vehicle environment, an alerting mechanism for sending a signal to the vehicle user, and a processor for providing instructions. The system further includes a user interface platform (UIP) having a wireless network connection to at least one of the housing, a user, a vehicle operation system, a social network, an emergency system, a connectable subject and any combination thereof.