Why You Need an Optical Mouse
Written by John J. Xenakis for
CFO.com,
Jan 31, 2001.
Keyboard and mouse devices are helping overcome repetitive stress
injuries.
Leah Stevens gets shooting pains in her hands and wrists if she types
for several hours at a time on her computer. As it happens, she's
also working on her Ph.D. thesis on ergonomics and technology for the
engineering and psychology departments at the University of Central
Florida, so she's in a good position to find ways to help herself.
Part of her research is to test out a "keyless keyboard" called the
OrbiTouch from Keybowl Inc. (http://www.keybowl.com). To use it,
you put your hands on two knobs (or domes) and slide them up, down,
left, or right in various combinations to type letters.
The device also has an integrated mouse, and therefore, the same
motions can drag and click the mouse.
Note that the knobs don't turn; they slide. This is important, because
it means that you can type without moving your fingers at all. Even
wrist movement is minimal, so that all motion is performed by the
elbows and shoulders.
"It has a contour that matches the anatomical fit of my hand," Stevens
says. "I notice a difference just putting my hands on the domes."
Stevens, who's a touch typist at 100 words per minute, finds the
OrbiTouch extremely comfortable to use. And after about 40 hours of
practice, she achieved a typing speed of 40 words per minute, which is
quite adequate, given the reduced physical stress.
Input Devices Aplenty Before going on with the OrbiTouch, it's worth
noting that the low-cost options are increasing for people with hand
injuries.
In fact, everyone should go to their local computer store and get an
optical mouse, a device that usually costs no more than $30 from
manufacturers such as Logitech Corp. or Microsoft Corp.
A ball mouse requires the user to press hard to make it work,
especially after dirt and gunk have accumulated in the mechanism.
But an optical mouse has no moving parts, and never gets dirty. It
works purely with a laser light, and it responds precisely and
accurately to the lightest feather touch, which does a lot to save
stress on the fingers and wrists.
There is such a big difference between using a mechanical mouse and
an optical mouse, that even if the company you work for is too cheap
to pay for it, I strongly recommend to everyone to go out to the store
and pay $30 for it yourself. The difference is so great, you'll be
glad you did.
While you're at the computer store, you might want to check out some
other devices. For example, there are wireless mice that don't require
cables between the mouse and the computer.
In addition, there are specially shaped mice that conform to the hand
in various ways. Or the mouse can be eliminated entirely with a
trackball or a tablet. Finally, there are "natural keyboards" that
provide different kinds of hand positions when typing.
"Try out the different mice in the store -- feel them and grip them, to see
what you should be honing in on," says Stevens. "The main thing is to use
common sense. Just because someone says it's ergonomically designed, don't
take their word for it. If it feels unorthodox to you, then don't use it.
Ask yourself whether it fits your body naturally, and whether you'd be
comfortable spending the time learning how to use it. If you don't give
yourself enough time, it'll just sit in the corner."
"Feel" the Screen
The iFeel mouse can help people having difficulty seeing windows on
the computer screen or different objects on a Web page, by letting
computer users "feel" the objects on their screens.
When a cursor moves across a window boundary, or moves over a button,
the mouse physically vibrates. You can adjust the vibrations to give
a "rubbery," "metallic," or "crisp" feel.
People who think they could be helped by the iFeel mouse should take
a couple of days to get used to it, according to Rob Enderle, analyst
for Giga Information Group. "It's different because it gives one more
piece of feedback."
Enderle says, "A lot of folks are uncomfortable with things they
can't touch. The iFeel gives them a feel for the pages they're looking
at, and for people having difficulty seeing lines, it can be very
helpful."
The iFeel mouse is available in computer stores for about $50. It
requires a USB port on your computer.
Typing with Boxing Gloves
The OrbiTouch is more experimental, with a product launch from Keybowl
Inc. expected within the next three months.
"It started out seven years ago as an innocent research project to
eliminate the motions causing [repetitive motion injuries]," says Pete
McAlindon, the inventor and CEO of Keybowl Inc. The company was formed
in 1997, following publication of McAlindon's original research
results, sponsored by the National Science Foundation.
Indeed, this kind of injury can strike almost any computer user at any
time. One person, who prefers to remain anonymous, played Minesweeper
intensively for two days and ended up with several months of wrist
pain. It's also been reported that even teenagers suffer life-long
repetitive stress injuries.
Carpal tunnel syndrome is the most widely publicized of these
problems, but there are many other injuries that can affect computer
typists, including arthritis, paralysis, missing fingers, and
neuromuscular disorders.
"As people started coming to me with upper body disabilities, I saw
this as a huge problem," says McAlindon. "For example, some people who
can't move their fingers have to type by blowing into a stick. These
people could use [the OrbiTouch] to type without using their fingers.
They could have their wrists totally immobilized, if necessary. You
could literally use it with boxing gloves on, although he doesn't
recommend it.
New users find that it takes five to 10 hours to use the keyboard
comfortably, and the average user can attain about half of his former
typing speed, according to McAlindon.
Although the OrbiTouch is not yet available for purchase, you can
advance order it from the Keybowl Web site, http://www.keybowl.com, for $299. The Web site also contains detailed
information on how the device works.
(This is a modified version of an article that originally
appeared on
Jan 31, 2001
on
CFO.com
at
this location.
)
|