A method of user authentication for a computing device, the method comprising: providing a user interface displayed on a display of the computing device, wherein the user interface permits configuration of authentication options (622, 624, 626, 628) prior to performing an authentication to access the computing device or data stored therein; displaying a list of different authenticators at the computing device via the user interface; enabling (510, 520) receipt of input in relation to selection of a plurality of selected authenticators, from the list, wherein each of the selected authenticators are of a different type; displaying, via the user interface, the selection of the plurality of selected authenticators (622, 624, 628) from the list in a first order of selected authenticators; enabling receipt of additional input in response to the selection of the plurality of selected authenticators (622, 624, 628) from the list, wherein the additional input defines a re-ordering of the selection of the plurality of selected authenticators from the first order of selected authenticators to a second order of selected authenticators; displaying, via the user interface, the selection of the plurality of selected authenticators (622, 624, 628) from the list in the second order of selected authenticators; and storing reference information identifying the plurality of selected authenticators (622, 624, 628), and storing order-of-use information that identifies the second order of selected authenticators in a memory of the computing device, wherein the reference information and the order-of use information are used when performing the authentication to access the computing device or data stored therein such that the authentication requires the plurality of selected authenticators to be provided in the second order of selected authenticators before access to the computing device or data stored therein is granted. providing a user interface displayed on a display of the computing device, wherein the user interface permits configuration of authentication options (622, 624, 626, 628) prior to performing an authentication to access the computing device or data stored therein; displaying a list of different authenticators at the computing device via the user interface; enabling (510, 520) receipt of input in relation to selection of a plurality of selected authenticators, from the list, wherein each of the selected authenticators are of a different type; displaying, via the user interface, the selection of the plurality of selected authenticators (622, 624, 628) from the list in a first order of selected authenticators; enabling receipt of additional input in response to the selection of the plurality of selected authenticators (622, 624, 628) from the list, wherein the additional input defines a re-ordering of the selection of the plurality of selected authenticators from the first order of selected authenticators to a second order of selected authenticators; displaying, via the user interface, the selection of the plurality of selected authenticators (622, 624, 628) from the list in the second order of selected authenticators; and storing reference information identifying the plurality of selected authenticators (622, 624, 628), and storing order-of-use information that identifies the second order of selected authenticators in a memory of the computing device, wherein the reference information and the order-of use information are used when performing the authentication to access the computing device or data stored therein such that the authentication requires the plurality of selected authenticators to be provided in the second order of selected authenticators before access to the computing device or data stored therein is granted.