Abstract: A ignition interlock device for a vehicle includes a short-range wireless transceiver (e.g. a Bluetooth® transceiver) configured to receive a wireless signal from a wireless communications device having a short-range wireless transceiver (e.g. another Bluetooth® transceiver). The device includes a microcontroller for generating an ignition control signal and an ignition interlock switch for controlling vehicle ignition in response to the ignition control signal. The device may also inhibit communications using the wireless communications device to ensure safe operation of the vehicle. The device may also send vehicle tracking data to a remote monitoring service (like a fleet manager). The device may also receive remote commands (e.g. from the fleet manager) to disable vehicle functions.