The Orbit Optical Trackball from Kensington is an ambidextrous alternative to traditional mice which require a constant grip to be used and a larger amount of space on the desktop. The 40 mm trackball utilizes optical tracking for accuracy and is centrally positioned for ease of movement by the fingers. Left and Right buttons are located adjacent to the ball, with the thumb and pinkie fingers naturally dropping into position over them. The Orbit Optical Trackball is sized to best fit the needs of those with small to average sized hands. Individuals with larger hands may wish to consider one of the larger trackball options.

Note: Those who perform large amounts of scrolling need to be aware that the Orbit Optical Trackball does NOT have a mechanism to perform vertical scrolling and should consider a trackball which includes a dedicated scroll wheel or ring such as the Orbit Optical Trackball with Scroll Ring.

Kensington has taken their venerable Expert Mouse Optical to a new level with the new Expert Mouse Wireless Trackball. Longtime or novice trackball users now have the freedom of wireless available in a full-size trackball with the additional option of selecting whether to connect via Bluetooth 4.0 LE or traditional 2.4 GHZ wireless using a USB nano receiver. This unique dual-connection feature makes the Expert Mouse Wireless Trackball a good choice for those with a limited number of USB ports or who wish to use the trackball on multiple systems, employing Bluetooth on one and using the RF Receiver on a second or non-Bluetooth compatible system.

The Expert Mouse Wireless Trackball employs Diamond Eye optical technology for smooth, precise tracking and features the well-known Kensington Scroll Ring for quick scroll access on web pages and within lengthy documents. Four large buttons provide easy access to primary functions and can be easily customized to personal preferences through the Kensington TrackballWorks software. The ambidextrous design easily accommodates both right and left-handed use and includes a detachable rest to aid users in maintaining a more ergonomic neutral wrist alignment.

The rechargeable Pro Fit Ergo TB550 Trackball from Kensington offers thumb-operated cursor control that eliminates the traditional arm and hand movement required with a traditional mouse. The 45° angled body rotates the hand and forearm away from a prone position to reduce strain on the forearm. Cursor control is via the 34mm trackball which offers silky-smooth movement and adjustable optical tracking from 400-1600 DPI. The contoured body provides a support for the hand, naturally positioning the fingers over the right and left buttons. Vertical and horizontal scrolling function are provided by a tilting scroll wheel that features crisp detents, conveniently positioned between these buttons to complete the traditional mouse control layout. The index finger has easy access to convenient Back and Forward Buttons for browsing through multiple pages of a document or web page.

The Pro Fit Ergo TB550 Trackball offers Dual Connectivity that can simultaneously support connections to up to 3 computers or devices (1 via the included 2.4 GHz receiver and up to 2 more via Bluetooth LE).

As the Pro Fit Ergo TB550 Trackball places cursor control fully upon the thumb, (which on most other trackballs is generally shared by several fingers), anyone who has existing thumb issues would be advised to consider alternative solutions.

The MicroTrac Trackball from Clearly Superior Technologies offers a surprising degree of performance packed into a small package. The diminutive housing means the MicroTrac can easily fit in the palm of the hand, potentially reducing fatigue by reducing the need to reach for a mousing device. Users with average or larger hands may well be able to perform all functions with a single hand, using the thumb for button activation and trackball control. Those with smaller hands will easily be able to perform all functions with two hands since reaching with the thumb may not be sufficient. Alternatively, the MicroTrac can be placed wherever desired and used as a traditional trackball, with rubber feet ensuring secure positioning. The exceptionally compact design also means this device can be used by those with very limited range of movement or even by small children and yet users with large hands can still achieve reasonably effective control without feeling overly constrained by the compact size.

Although the MicroTrac trackball has minimal mass and is therefore unable to 'spin' freely as do its larger PC-Trac and L-Trac cousins, the built-in dynamic motion enhancement provides single-pixel control while still offering rapid movement over greater distances. Rolling the ball faster exponentially increases the cursor speed across the screen, move the ball slowly and you get single pixel accuracy. This three button trackball requires no special drivers or software. The middle button can perform both Drag-Lock and Scroll-Lock functions. An indicator LED notifies users when the Scroll-Lock mode is activated. Load balancing between hands is encouraged by the ability to simultaneously press all three buttons to switch them between Right and Left format.

With the MicroTrac you can work precisely and comfortably for hours at a time. The Drag Lock feature makes this product more comfortable by eliminating the need to hold down a button to highlight or select items. Simply tap the Drag Lock Button and the button stays 'locked' until hit a second time. The MicroTrac also far outperforms similarly-sized trackballs by offering much smoother movement combined with the superior control provided by the Dynamic Motion-Enhancement.

The OptimaX from Pretorian is the first wireless trackball designed specifically for users with motor skill difficulties.

Built on the established platform of its wired counterpart, the OptimaX employs an optical sensor which eliminates mechanical parts which can fail from wear while still offering precise tracking and cursor control. Trackball movement is silky smooth and the stable low profile footprint makes the OptimaX suitable for a wide spectrum of computer users. The extended operating range in excess of 10 metres makes it ideal for use in multi-user settings and classrooms as it can be employed as a desktop or handheld trackball.

Colour-coded and recessed control buttons for Left Click, Right Click, and Drag-Lock are positioned above the trackball. The recessed location assists users in guiding their fingers to the appropriate buttons as well as preventing accidental activation that could occur with flush or raised buttons. In addition, the OptimaX is also equipped with dual ports which accommodate the attachment of external switches for activation of the left and right click functions. These can be used to offer users with limited motor control alternative methods of clicking.

Robustly manufactured, the OptimaX is virtually maintenance free (with the exception of battery replacement) and will give years of untroubled service.

The Orbit Wireless Mobile Trackball from Kensington is a compact ambidextrous trackball mouse that provides the convenience of wireless in a small footprint. The compact size and wireless convenience make it a suitable solution for short-term mobile usage or for users with small hands who may find other trackball options to be a bit large.

The Orbit Wireless Mobile Trackball is plug and play (no driver required). Buttons situated on the outer sides of the trackball housing provide access to Left and Right Clicks. Scrolling is available via dual Touch Scroll Zones that are positioned to the left and right of the compact 32 mm trackball. Functions can also be customized by installing and running the TrackballWorks software from Kensington. TrackballWorks offers button customization as well as cursor and scrolling speed adjustment options.

In order to extend battery life the wireless range is limited to 10 feet. Users are notified of necessary battery replacement by a low battery indicator light. A power switch further reduces unnecessary battery consumption. In step with the mobile focus of this product, the micro receiver can be conveniently housed in the body of the mouse during travel or storage.

The n-ABLER Trackball from Pretorian is specifically designed to address the needs of computer users with limited hand control, motor skill difficulties, poor hand-eye coordination, and lack of manual dexterity. This functionality is packaged in a heavy duty housing designed to survive heavy use. High contrast coloured buttons and trackball assist users in determining position and function of the controls.

The n-ABLER Trackball provides cursor control as well as single-click controls for left click, right click, double click, and drag lock functions. In addition the n-Abler Trackball also offers a "Locking Axis" function which locks the cursor to either vertical or horizontal movement, addressing the difficulty of cursor control for users who experience tremors or may struggle with fine motor control.

Cursor control on the n-ABLER Trackball is provided by a large 63 mm, free-running ball which responds to minimal effort. To avoid accidental movement the trackball projects only slightly above the housing, with the activation buttons fully recessed to avoid accidental activation as well as to aid users in button targeting. Dual mini-phono jacks also permit the attachment of a variety of external switches to provide users with easier access to the Left and Right click functions. Users who find the traditional orientation unsuitable have the option of 'teaching' the trackball to orient itself at 90° increments, freeing the user to change the housing orientation for optimum usage and comfort. The trackball also offers an optional buzzer setting which provides notification as specific functions are activated or deactivated.

The design of the n-ABLER Trackball offers fingertip precision control and requires only minimal hand movement. This can reduce wrist and elbow fatigue, as it requires noticeably less effort. The symmetrical design enables users to work with either hand without having to angle the wrist, and the unit can also be configured for 'left-handed' operation. Its large, integrated hand support/palm rest makes work posture more relaxed and less strained.

Note: The release of iOS13 for Apple portable devices included support for USB Pointing Devices. This means that virtually all of the Pretorian Mouse Replacement solutions can now be used with iPads and iPhones that have iOS13 or newer. Connection to the portable device requires a camera adapter cable. Because the mousing device will be powered by the phone or tablet it is preferable to use one with pass-through charging so the portable device can charge while the mousing device is attached and in use.

The Pro Fit Ergo Vertical Wired Trackball from Kensington offers thumb-operated cursor control that eliminates the traditional arm and hand movement required with a traditional mouse. It also moves the hand and forearm away from a prone position by angling the hand outward at 60°. The 34 mm trackball offers silky-smooth movement with adjustable optical tracking from 400-800 DPI. The contoured body provides a support for the hand, naturally positioning the fingers over the right and left buttons. Side scrolling function is provided by a tilting scroll wheel that features crisp detents, conveniently positioned between these buttons to complete the traditional mouse control layout. The index finger has easy access to convenient Back and Forward Buttons for browsing through multiple pages of a document or web page. The Pro Fit Ergo Vertical Wired Trackball has a hardwired connection that ensures reliable signal for both clicking and cursor control.

As the Pro Fit Ergo Vertical Wired Trackball places the workload fully upon the thumb, (which on most other trackballs is generally shared by several fingers), anyone who has existing thumb issues would be well-advised to consider alternative solutions.

For those who prefer the freedom of a wireless device this trackball is also available as the Pro Fit Ergo Vertical Wireless Trackball.

The Slimblade Wired Media Control Trackball from Kensington is designed to provide specialized functionality to those working with audio, video, or image editing. Three modes of operation can be accessed. The Slimblade defaults to View mode which offers traditional cursor control and scrolling function; however, Media and View modes can be easily accessed with a single click. The Media mode provides users with quick access to play/pause, stop, and track forward/backward functions while the View mode offers zoom and pan options. A heads-up display on the monitor advises users as to which application is active and what function is being performed.

The Slimblade departs from other Kensington trackball designs by employing a 55 mm trackball which is noticeably heavier for its dimensions than other models. In order to accommodate the need to grip and rotate the ball to accomplish common tasks such as vertical scrolling, 80% of the trackball projects above the housing height, resting freely on top of the trackball base.

Note: While providing users with a stylish look and generous functionality, the Slimblade Media Control Trackball does require repetitive pinching and twisting actions to perform common tasks. As well, the increased elevation of the trackball above the housing can lead to significantly greater wrist extension than other trackball designs. These types of actions and hand placement are often considered potential contributors to the development of complaints such as carpal tunnel or other RSI. Users may wish to consider the intended usage and the degree to which these actions may be required along with any realized benefits when selecting a suitable device.

The SimplyWorks Wireless Trackball from Pretorian combines the established technology and design of the Optima Trackball with the expanded capabilities provided by the SimplyWorks Wireless connection.The SimplyWorks Trackball employs optical sensor technology that eliminates mechanical parts which can fail from wear while still offering precise tracking and cursor control. Trackball movement is silky smooth and the stable low profile footprint makes the SimplyWorks Wireless Trackball suitable for a wide spectrum of computer users. The extended operating range (in excess of 10 metres) makes it ideal for use in multi-user settings and classrooms as it can be employed as a desktop or handheld trackball.

The SimplyWorks Wireless functionality means that this trackball can be combined with any combination of up to 5 other SimplyWorks equipped devices to communicate with a single computer through a SimplyWorks Wireless RECEIVE. This makes it an ideal solution for co-operative learning and interactive multi-user activities.

Colour-coded and recessed control buttons for Left Click, Right Click, and Drag-Lock are positioned above the trackball. The recessed location assists users in guiding their fingers to the appropriate buttons as well as preventing accidental activation that could occur with flush or raised buttons. In addition, the SimplyWorks Wireless Trackball is also equipped with dual ports which accommodate the attachment of external switches for activation of the left and right click functions. These can be used to offer users with limited motor control alternative methods of clicking.

Robustly manufactured, the SimplyWorks Wireless Trackball is virtually maintenance free (with the exception of battery replacement) and will give years of untroubled service.

* SimplyWorks is the world's first fully integrated wireless system designed specifically for users with motor skill difficulties.

Note: The latest release of iOS13 for Apple portable devices includes support for USB Pointing Devices. This means that virtually all of the Pretorian Mouse Replacement solutions can now be used with iPads and iPhones that have iOS13 or newer. Connection to the portable device requires a "camera adapter cable". Because the mousing device will be powered by the phone or tablet it is preferable to use one with pass-through charging so the portable device can charge while the mousing device is attached and in use.
In the case of the SimplyWorks solutions, the Receive:2 is still required to support the pointing device connection. The Receive:2 plugs into the camera adapter cable and provides the wireless connection to the pointing device.