Patent ID: 8281041

Claim:
A method for preventing keypad entry errors, the method comprising the steps of: detecting a press and a release of a first key of a keypad having a plurality of keys, the time between the press and the release of the first key being an actual first key active time; detecting a press and a release of a first subsequent key on the keypad, the time between the press and the release of the first subsequent key being an actual first subsequent key active time; determining an actual key press-to-press length of time between the press of the first key and the press of the first subsequent key; determining an actual inactive length of time between the release of the first key and the press of the first subsequent key; accepting the first key press only if the actual first key active time equals or exceeds a predetermined minimum on-time and the release of the first key precedes the press of the first subsequent key; and accepting the first subsequent key press only if the actual inactive length of time equals or exceeds a predetermined minimum off-time, the actual key press-to-press length of time equals or exceeds a predetermined value, and the actual first subsequent key active time equals or exceeds the minimum on-time.