US Patent 11514391 Authenticating a user by delivery device using unique voice signatures

Aspects of the present invention disclose a method for a user-to-machine interaction to authenticate a user to a delivery device prior to completion of delivery of goods or items. The method includes one or more processors identifying initiation of a delivery associated with a user. The method further includes generating an audio signature that corresponds to the delivery. The method further includes providing a digital file that includes the audio signature to a computing device associated with the user. The method further includes providing the digital file that includes the audio signature to a delivery vehicle. The method further includes authenticating the user with the delivery vehicle based at least in part on the digital file of the user and the digital file of the delivery vehicle.