A method for detecting the presence of one or more security tokens comprises a carrier device sending a wake-up message for receipt by the security token. Based on the wake-up message and a condition of the one or more security tokens, the security token either wakes up or returns to an inactive state. The wake-up message includes a security code that is unique to a carrier device and an instruction code that is configured to selectively wake up at least one of the one or more security tokens that are connected to the vehicle. A user presence detection system includes a carrier device configured to send a wake-up message for receipt by a security token. The wake-up message includes a unique security code and an instruction code configured to instruct security tokens associated with the vehicle to wake up.
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