A method performed on a device includes receiving, from a user, a finger-touch-initiated request for access to a layer of a multi-layer application on the device, the multi-layer application having a plurality of user interface layers. The method may also include identifying a finger of the user used to provide the finger-touch-initiated request, the finger associated with one of the layers of the multi-layer application. The layer associated with the identified finger of the user may be operated on. Each finger of the user can be associated with a different layer of the multi-layer application. Fingerprints can be used to differentiate each finger and/or to identify the user by fingerprint recognition techniques. Fingerprints can be used to vary the access parameters of a layer of the application and/or to provide security levels for accessing the layers of the multi-layer application.