1. A method of performing a processing action, the method comprising: detecting an input from a user via an input device of a processing device, the input including a touch by at least one finger of a plurality of fingers of a user or one or more of a plurality of users; estimating a gesture performed by the at least one finger based on the touch; measuring at least part of a fingerprint of the at least one finger, and identifying the at least one finger used to apply the input based on stored fingerprint data that differentiates between individual fingers of the user or the one or more users; identifying a command by the processing device based on the estimated gesture and based on the identified at least one finger, the command identified from a plurality of different commands based on which of the individual fingers is identified, wherein the identified command is a first command based on a first finger being used to perform the gesture, and the identified command is a second command based on a different second finger being used, the first command being different than the second command; and performing an action associated with the command by the processing device.