A laptop computing device comprising: a housing comprising: a top portion ; a hinge; and a bottom portion connected to the top portion via the hinge; a primary display integrated in the top portion of the housing; a keyboard integrated in the bottom portion of the housing; characterised by a button integrated into the bottom portion of the housing and positioned between the keyboard and the hinge, and comprising a biometric sensor comprising a fingerprint sensor; wherein: in response to a user depressing the button, in which the button moves from an undepressed position to a depressed position for an unrestricted action, the laptop computing device is configured to perform the unrestricted action without authenticating an identity of the user; in response to a user depressing the button, in which the button moves from an undepressed position to a depressed position for performing a restricted action, the laptop computing device is configured to perform the restricted action after authenticating the identity of the user; and in response to the user touching the button, in which the button is maintained in the undepressed position while a user's finger is positioned on the button, the laptop computing device is configured to authenticate an identity of the user for executing an operation at the laptop computing device. a housing comprising: a top portion ; a hinge; and a bottom portion connected to the top portion via the hinge; a top portion ; a hinge; and a bottom portion connected to the top portion via the hinge; a primary display integrated in the top portion of the housing; a keyboard integrated in the bottom portion of the housing; characterised by a button integrated into the bottom portion of the housing and positioned between the keyboard and the hinge, and comprising a biometric sensor comprising a fingerprint sensor; wherein: in response to a user depressing the button, in which the button moves from an undepressed position to a depressed position for an unrestricted action, the laptop computing device is configured to perform the unrestricted action without authenticating an identity of the user; in response to a user depressing the button, in which the button moves from an undepressed position to a depressed position for performing a restricted action, the laptop computing device is configured to perform the restricted action after authenticating the identity of the user; and in response to the user touching the button, in which the button is maintained in the undepressed position while a user's finger is positioned on the button, the laptop computing device is configured to authenticate an identity of the user for executing an operation at the laptop computing device. in response to a user depressing the button, in which the button moves from an undepressed position to a depressed position for an unrestricted action, the laptop computing device is configured to perform the unrestricted action without authenticating an identity of the user; in response to a user depressing the button, in which the button moves from an undepressed position to a depressed position for performing a restricted action, the laptop computing device is configured to perform the restricted action after authenticating the identity of the user; and in response to the user touching the button, in which the button is maintained in the undepressed position while a user's finger is positioned on the button, the laptop computing device is configured to authenticate an identity of the user for executing an operation at the laptop computing device. <EOS>