Controlling Access to a Motor Vehicle

A digital key provides security for use of a motor vehicle. A method for delivering a digital key such as this from a sender to a recipient includes steps of a secret of the sender being deposited with a manufacturer service; a key created by the recipient being signed by the sender; the signed key being relayed to the recipient; an input for the secret by the recipient being acquired; the key and the input being relayed from the recipient to a tracking service; the input being relayed from the tracking service to the manufacturer service; the manufacturer service determining that the input and the secret match; a consent being relayed from the manufacturer service to the tracking service; and an attestation being relayed from the tracking service to the recipient.