Methods and systems described in this disclosure for protecting one or more consumer accounts. In one implementation, the system includes a security device and a portable computing device. The portable computing device detects whether it is in proximity to the security device. When the portable computing device is in proximity to the security device, one or more consumer accounts associated with the portable computing device is permitted to be used in a transaction. When the portable computing device is not in proximity to the security device, one or more consumer accounts is prevented from being used in the transaction.