Patent ID: 7269449

Claim:
A handset comprising: a housing having a display, a telephone keypad, and a first keypad, the first keypad being removably coupled to the housing; circuitry within the housing configured to detect a type of keypad attached to said housing, the circuitry adapted to interface with the display and the first keypad; a second keypad, the second keypad exchangeable with the first keypad; wherein the second keypad is adapted to replace the first keypad on the housing when the first keypad is removed from the housing and the circuitry detects a first electrical resistance of the first keypad or a second electrical resistance of the second keypad where the first electrical resistance is different than the second electrical resistance; and an illumination source, wherein the illumination source illuminates the first or second keypad when the first or second keypad is coupled to the housing and the first keypad at least partially conceals the telephone keypad.