A computer-implemented method comprising: establishing a connection between a user device of a first user and a system onboard a vehicle being driven by the user; requesting access, through the established connection, to user information on the user device; in response to access being granted, retrieving at least a portion of the user information from the user device, the portion of user information including a digital identification document of the first user that had been issued by an entity after having vetted the first user, the digital identification document including a digital biometric of the first user as well as a digital watermark indicating the issuing entity; retaining, on the system onboard the vehicle, data encoding the digital identification document of the first user such that when the vehicle is inspected by a third-party agent, the digital identification document of the first user is presented to the third-party agent; and authenticating, on the system onboard the vehicle, a second user to unlock the vehicle and become a driver of the vehicle by verifying security features of a digital driver's license and a biometric provided from the second user with the digital identification document of the first user retained on the system onboard the vehicle, wherein the security features of the digital driver's license include a digital watermark, and wherein verifying the security features includes determining whether the digital driver's license of the second user to be authenticated is legitimate and valid, and if the digital driver's license is legitimate and valid, verifying identity information of the provided digital driver's license with a third party database, wherein the third party data is a remote database including identity data vetted by an external authority; and if the identity information is validated in agreement with the vetted identity data, providing full access to the authenticated second user to operate the vehicle. establishing a connection between a user device of a first user and a system onboard a vehicle being driven by the user; requesting access, through the established connection, to user information on the user device; in response to access being granted, retrieving at least a portion of the user information from the user device, the portion of user information including a digital identification document of the first user that had been issued by an entity after having vetted the first user, the digital identification document including a digital biometric of the first user as well as a digital watermark indicating the issuing entity; retaining, on the system onboard the vehicle, data encoding the digital identification document of the first user such that when the vehicle is inspected by a third-party agent, the digital identification document of the first user is presented to the third-party agent; and authenticating, on the system onboard the vehicle, a second user to unlock the vehicle and become a driver of the vehicle by verifying security features of a digital driver's license and a biometric provided from the second user with the digital identification document of the first user retained on the system onboard the vehicle, wherein the security features of the digital driver's license include a digital watermark, and wherein verifying the security features includes determining whether the digital driver's license of the second user to be authenticated is legitimate and valid, and if the digital driver's license is legitimate and valid, verifying identity information of the provided digital driver's license with a third party database, wherein the third party data is a remote database including identity data vetted by an external authority; and if the identity information is validated in agreement with the vetted identity data, providing full access to the authenticated second user to operate the vehicle. determining whether the digital driver's license of the second user to be authenticated is legitimate and valid, and if the digital driver's license is legitimate and valid, verifying identity information of the provided digital driver's license with a third party database, wherein the third party data is a remote database including identity data vetted by an external authority; and if the identity information is validated in agreement with the vetted identity data, providing full access to the authenticated second user to operate the vehicle.