A system and computer-implemented method includes the operation of detecting, by a payment-on-delivery device, a carrier mobile computing device of a package carrier. The payment-on-delivery device establishes a communications link with the carrier mobile computing device. The payment-on-delivery device receives a carrier mobile device identifier from the carrier mobile computing device. In addition, the payment-on-delivery device presents an access code to the package carrier for actuating the electronic lock to unlock an access point to a delivery location. The payment-on-delivery device then obtains a location of the carrier mobile computing device from a location service associated with the carrier mobile computing device using the carrier mobile device identifier. Furthermore, the payment-on-delivery device transmits a “lock” command to the electronic lock for actuating the electronic lock to lock the access point based on the location of the carrier mobile computing device.