Patent ID: 7403099

Claim:
A smart key system for a vehicle comprising: an in-trunk communicator provided within a trunk of a vehicle and configured for wirelessly communicating with a mobile communicator in the trunk of the vehicle; a trunk lock status detector for detecting a lock/unlock status of the trunk; a controller for executing: an ex-room process for determining that the mobile communicator is not in a passenger compartment of the vehicle; an in-trunk process for determining that the in-trunk communicator communicates with the mobile communicator when the trunk lock status detector detects that the trunk gets locked; and a predetermined process for the mobile communicator locked in the trunk, based on the determinations of the ex-room process and the in-trunk process, wherein the in-trunk communicator is located at a corner of the trunk, wherein the in-trunk communicator includes a transmitter and a receiver located at different corners of the trunk.