42. The computing device of claim 41 , wherein means for implementing the identified functionality on the computing device comprises: means for generating a user input event notification; and means for forwarding the user input event notification to an application executing on the computing device.
41. A computing device, comprising: force sensing means for sensing a force applied to a case of the computing device; means for receiving an electrical signal from the force sensing means; means for comparing the received electrical signal to each of a plurality of reference signal templates; means for calculating cross-correlation values of the received electrical signal and each of the plurality of reference signal templates; means for determining a best match reference signal template for the received electrical signal based on the cross-correlation values; means for identifying a functionality associated with the best match reference signal template; and means for implementing the identified functionality on the computing device.