A mouse for your ring finger
The Finger Mouse: a big plastic rock of geekish bling that lets you control your pointer from the knuckle. Like a tiny jewel, a small trackball sits in the upper-left quadrant, surrounded on three sides by a scroll button, a left click button and a right click button. ou will require prehensile fingers or opposable joints to operate the finger mouse one-handed, but it's still a rather nifty idea... except it's wired, which wholly eliminates the Finger Mouse's potential killer app of being a slick way to control a Powerpoint presentation from behind the projector. £14.99 will get you one from Maplin.
Wired Optical Ring Mouse [Maplin via Red Ferret]
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If you wear it with the controls inward, you could probably operate it one-handed by using your thumb.
If you wear it with the controls inward, you could probably operate it one-handed by using your thumb.
Except then the mouse buttons are backwards!
Look min, what's wired to you is pefectly neetral to others, 'kay?
Yeahhh... let's have a wireless version, plated with 18K gold and with jewels as the buttons, so that I can wave it around and summon my henchman while intoning, "Your beautiful companion will... entertain me... long after you are dead, Flash Gordon! Mua ha ha ha!" Also, it would facilitate porn surfing.
I don't really get how you're meant to use it.
My grandparents have something very similar. It's practically useless, the only use possibly coming from being able to click on one thing while keeping the mouse in the same position (say, reading webcomics or viewing flikr photo collections sequentially while the "next" button stays in one place).
#6 It's quite easy to use.
Here is a video demonstration.