Trackball mice come in all sizes and configurations. Ergonomic mice are shaped specifically to fit a hand and in looking for one of these to purchase you will want to wrap your hand around many of them in order to find out which mouse fits your hand shape best. This is especially important if you are left handed, as a right handed ergonomic mouse will never work for a left handed user with any efficiency.

You will also want to consider the amount of space you have. If you have a good amount of space, you may opt for the larger more hand friendly mice, whereas if you have a very small space, you will want to purchase a small trackball mouse, if not a mini trackball mouse.

The mouse, in its most simplistic form, appeared on the computer scene over forty years ago. It has had an inconsistent road of evolution since then, sometimes staying stagnant for long periods before a new technology comes onto the market.

Here is another unique jump in technology, it’s called the ‘Rolee Polee’. This little mouse wraps itself around your index finger and presents your thumb with not only the trackball, but also the two control buttons. The enter button is conveniently located in front of your index finger in almost a trigger fashion. With this little device, you will have no more need for a mouse pad or a place to put it. You do not need to stretch your arm out and twist your wrist into multiples of positions in order to achieve the response required on your computer screen. You have but to move your thumb between the trackball and the two buttons and let your index finger take action.

The only downfall of this little device is that it is still corded to your computer. But it’s only a matter of time before this cute little ball of versatility is no longer tethered, but free to work with you unfettered by tangles of cord and limited mobility.

The Kensington SlimBlade Bluetooth Trackball Mouse is at the top of this group, it is wireless, battery driven by two AA batteries with up to a six month life span and the ability to warn you when the batteries are low. This mouse is responsive and easy to handle. You never have to worry about turning it off, as it goes to sleep when your computer does.

The SCT Micro Trac 600 has three programmable buttons located on the top. The miniature track ball is centrally located. This trackball is a good replacement for your touchpad and uses the PS/2 port or serial interface port on your computer.

A new and interesting contestant in the mini trackball field is the finger mouse. This mouse literally fits over your index finger, the track ball is controlled by your thumb, as are the two buttons, the enter button is a trigger button located inside the finger hole, triggered by your index finger. This would work great in a situation like being in a plane or other tight quarters. It is currently corded so that would be a feature to look forward to.