The BIGTrack roller ball was originally intended for children. Both ball and buttons are large enough to be controlled by feet or elbows, making it ideal for use by anyone with poor motor control.
BigTrack Roller
The BIGtrack comes in two versions, one with switch inputs at the back which allow you to replace the buttons with switches of your choice (the switches are sold separately), the other version has no switch input.
This roller ball is helpful for people with severe learning disabilities due to the size of the ball and the positioning of just the two buttons. The BIGTrack rollerball tends to be quite popular with people who use their feet to control a pointing device.
