Access Device 2000
A ruggedized Newton device developed by Harris Corporation based on the MessagePad 2000. Also known as the AD2000, it was primarily used by utility companies for data collection, equipment testing, and communicating over telephone lines. After development of the Newton was Steved, Access Device 2000 was replaced by a similar model that used the Windows CE operating system rather than Newton OS.
Third party devices that utilize a licensed version of the Newton OS are also referred to as clones.