This is a good idea. I'm sure there was a time when law-makers looked askance at a ball-point pen. These technologies are all part of normal 21st Century behavior.

For those who worry that their Congressman/woman will just use the devices to goof off, what makes you think they wouldn't be goofing off anyway? How people use their technology (responsibly or irresponsibly) is not the fault of the technology... it's the fault of the person. Frankly, I'm amazed to learn that cell phones have been banned.