A system for multi-factor entry authentication of vehicle entry events, comprising: a vehicle data processing system having a digital assistant application that includes an entry detection component, an entry authentication component, and an access control component, the digital assistant application being configured to receive speech signals for processing to perform speech recognition, wherein the digital assistant application executes in a vehicle to: receive, by the entry detection component, at least one sensor signal obtained by a first sensor (136, 202, 204, 206, 210) installed in the vehicle; determine, by the entry detection component, based on the at least one sensor signal, an entry event into the vehicle, the entry event indicative of a user entering the vehicle; receive, by the entry authentication component, responsive to the entry event into the vehicle, a first authentication input signal comprising an audio input signal and a second authentication input signal, the first authentication input signal being obtained from the user by a microphone of the vehicle, and the second authentication signal being obtained by a second sensor associated with the vehicle (216, 218, 210); determine, by the entry authentication component, a first authentication state based on the first authentication input signal and a first authentication credential from a plurality of authentication credentials, wherein the first authentication state is determined by extracting one or more speaker indicative features from the received audio input signal and comparing the extracted features to a set of corresponding speaker specific features stored in a data repository, wherein the first authentication state is determined based on the result of the comparison; determine, by the entry authentication component, a second authentication state based on the second authentication input signal and a second authentication credential of the plurality of authentication credentials; identify, by the access control component, an access permission level of a plurality of access permission levels based at least in part on the first authentication state and the second authentication state; identify, by the access control component, responsive to the access permission level, a subset of a set of functionalities available via the vehicle; and provide, by the digital assistant application, vehicular access to the subset of functionalities and an audio output signal related to at least one subset of the functionalities. receive, by the entry detection component, at least one sensor signal obtained by a first sensor (136, 202, 204, 206, 210) installed in the vehicle; determine, by the entry detection component, based on the at least one sensor signal, an entry event into the vehicle, the entry event indicative of a user entering the vehicle; receive, by the entry authentication component, responsive to the entry event into the vehicle, a first authentication input signal comprising an audio input signal and a second authentication input signal, the first authentication input signal being obtained from the user by a microphone of the vehicle, and the second authentication signal being obtained by a second sensor associated with the vehicle (216, 218, 210); determine, by the entry authentication component, a first authentication state based on the first authentication input signal and a first authentication credential from a plurality of authentication credentials, wherein the first authentication state is determined by extracting one or more speaker indicative features from the received audio input signal and comparing the extracted features to a set of corresponding speaker specific features stored in a data repository, wherein the first authentication state is determined based on the result of the comparison; determine, by the entry authentication component, a second authentication state based on the second authentication input signal and a second authentication credential of the plurality of authentication credentials; identify, by the access control component, an access permission level of a plurality of access permission levels based at least in part on the first authentication state and the second authentication state; identify, by the access control component, responsive to the access permission level, a subset of a set of functionalities available via the vehicle; and provide, by the digital assistant application, vehicular access to the subset of functionalities and an audio output signal related to at least one subset of the functionalities.