An information processing apparatus includes a processor and a memory. The memory is in communication with the processor, where the memory stores computer-readable instructions that are executed by the processor. The processor performs operations including storing, in association with each other, vehicle position information with which a vehicle is identified, and parcel receipt information with which the vehicle is specified instead of an address or a name. The operations further include specifying the vehicle based on the parcel receipt information. The operations further include acquiring authentication information with which the vehicle is unlocked. The operations further include sending the authentication information to a device.