can I walk around a classroom with this and use it while doing so? I want a wireless way to use my computer while walking around, standing, addressing a class, etc. In other words, w/o having to sit at the computer. I would have the computer screen projected onto a white board. Has anyone used it this way? Are there other, better options? Thanks
One thing to consider is that because the trackpad has to be on something solid to click, you would have to set it to translate a tap to a click if you would be carrying it in your hand. Otherwise, I think it would work great!
Yes, you can. As Anson S says, you will want to set it up so you can use a tap (on the flat surface) to click, rather than a 'mechanical click' (though I can get mine to mechanical click in midair by simply holding it between thumb & finger and compressing either of the two rubber 'clickable' feet on the bottom left & right of the unit).
You should also pay close attention to the weight of this item. It isn't light, though it does rest comfortably across my (rather large) left hand (I'm right-handed, so I tap, rotate, etc. with my right). If you'll be carrying it for several hours a day, it could simply be too heavy. It's also probably almost twice the surface area of my Macbook Pro (15 inch)'s trackpad (including the non tappable battery area at top--probably only a 50-60% larger tappable area without that), so it's pretty large too--look at the dimensions as well or go play with one at an Apple Store first.
There are a number of 'in air' (gyroscopic) mice available too that might be lighter weight. The trackpad is very nice however!