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A Rollerball, also sometimes known as a trackball, provides a mouse alternative that is operated by the user moving a ball to control the pointer movement.
A standard model rollerball such as the OPTIMA Rollerball includes left and right click operations provided for by buttons with an additional button for drag lock to allow for easy single-handed operation. Extra sockets allow external switches to be used as alternatives to the built-in buttons and two further handles (T-bar and sponge ball) are also included.
Including identical functionality to the Optima Rollerball, the OPTIMAX Wireless Rollerball allows the user to choose the best position for operation, giving them more independence with the device having an operating range exceeding 10 metres.
For more advance computer control and for users with more severe motor problems the n-ABLER Rollerball requires only a light touch with fingertip control. It has additional buttons providing double click and direction lock as well as a swappable left/right click function. Accidental button presses are also reduced by having recessed buttons.
The n-ABLER Pro Joystick is specifically designed for computer users with limited hand control, motor skill difficulties, poor hand-eye-coordination, limited manual dexterity, involuntary muscle spasms and hand or wrist tremors. It includes the same functionality as the n-ABLER but with the addition of an anti-tremor control button to improve cursor control and cursor speed control
All of these devices operate in the same way as a standard mouse, so they do not require any additional software. Simply connect to a USB socket and they can be used at the same time as a standard mouse.