If you do not wish to be reliant on a trackpad, and tire of dragging a full-sized mouse around, then the ODIN, a laser-projected mouse, may be worth a glance.
You’ve seen laser projected interfaces that mimin keyboards, however the crew that made ODIN says it is the world’s first laser-projected mouse interface. Which is cool… as long as you’re prepared to carry around the disembodied head of a tiny Optimus Prime when meddling with Powerpoint. We just gave it a cursory web browsing test, and while it lacks, obviously, the physical feedback of both mice or click-able trackpads, it behaves a whole lot the former. We just wished it looked subtle.
The Odin moused began life as a Kickstarter venture, and it’s surpassed its targets and is set to enter full production in the coming month. The crew says that the lower wrist angle reduces carpal tunnel, and it definitely feels gentler than a physical mouse: latency was respectable and the gadget requires a flat surface to work, with the workable area fixed at just over three inches squared.
Limitation-wise, that space can’t be changed and while laser projection is only in red, you can select from three different colours of robotic shrunken heads. Hit up the crowdfunding website for all nitty gritty and an option to buy!