Amkey was an American keyboard manufacturer located in Massachusetts that specialised in capacitive keyboards. In 1977 Amkey filed US patent 4163222 “Synchronous phase detected keyboard” for their capacitive detection mechanism. This mechanism is based on the standard construction of a foam pad with foil applied. A later patent US4439647 filed in 1982 covers flat keyboards.
All the examples below are foam pad capacitive.
- Unidentified model used with the Apple I computer (the model number is visible but unreadable)
- MPNK-106 (97-key), manufactured for Computek in October 1982, Amkey serial number 77435; the keycaps appear to be Comptec SA family
- MPNK-68 (68-key) manufactured for Computervision Corporation, Amkey serial number 100648, manufactured circa 1985
- MPTK 129 keyboard reported to be from a B-52 Stratofortress, Amkey serial number 113837, manufactured circa 1988; this appears to use adapters to fit Amkey keycaps to Micro Switch mount keystems, but this cannot be determined from simply the photographs available