Abstract: A device, system and method of mobile identity verification is provided. Identifier data is received at the device, from a remote computing device. The device generates a machine-readable verification code using a first given algorithm, the first given algorithm configured to encode the identifier data in the verification code; data encoded in the verification code is extractable using a second given algorithm complimentary to the first given algorithm. The verification code is provided for acquisition by a proximal device for transmission to the remote computing device to provide a one-time verification of the device by extracting at least the identifier data from the verification code using the second given algorithm at the remote computing device. New identifier data is received when the verification code expires after one or more of a given time period and a given number of uses to generate a new verification code.