My wife has a setup on her wheelchair that is part of her controller package. It is from Permobile, and is calledR-net and is from PGDrives Technology.
www.pgdt.com. They are a Spirent company according to the manual. this setup allows her tu use IR transmitter to the TV, and she has also bought a bluetooth adapter that allows her to use the handle on her power wheelchair as a mouse. There are alos sip-and-puff options available. Cathy can use her arms, but not her hands. so this works pretty well. In addition, I bought a copy of Dragon Naturally Speaking. Andd for phone use, when I leave a hang a headset on her ear, and she uses something called a SAJE technologies phone setup. You can google that one. It's pretty standard. Problem is it doesn't work with Windows 7 yet, so you have to install an emulator.