An attempt to bring a mouse interface to market before the official SamCoMouse Interface was released.
The device was a modified PC serial mouse designed to be attached to a joystick port supplied with a driver to map the XMOUSE. YMOUSE, BUTTON commands as well as demonstration programs and instructions to patch Flash!.
In BASIC the mouse drove the keyboard input 6,7,8,9 with 0 and 1 for the two buttons which meant in theory that it could be used with games and programs that used Sam/Sinclair Interface 2 mappings but in practice the inputs and rate was incompatible with the gameplay.
There was dissatisfaction with the build quality (the extra board was floating and stuffed in with padding) along with the poor quality of the demonstartion programs and reports that it was unresponsive did not help it’s sales.
Hardly any software was compatible or written to support the Joy Mouse's joystick operation and once the SamCo interface was released complete with an off-the-shelf Contrivor Atari ST/Amiga mouse it vanished from view.