I'm currently working with these for a senior design project...I must say, I'm not a huge fan. You can do some neat things with the accelerometers, but the RF range is severely limited. Having worn one for extended periods of time, I must say that it's not something I'd enjoy wearing around. It's bulky and a bit unsightly.
Still, it's fun to hack with, and you can do some cool things with accelerometer data. Definitely worth the $25.
Still, it's fun to hack with, and you can do some cool things with accelerometer data. Definitely worth the $25.