About Mice and Pointing Devices

Good reply, I'd add one consideration. My 70+ year old mom was having problems using either a touchpad or a standard mouse on the refurb laptop we got for her (she didn't have Parkinson's but she did have a bit of a shaky hand).

We ended up getting her a 'mouse' that didn't move around, but had a large trackball that she could roll around to move the cursor, and a left and right click buttons. It took her just half an hour to be able to use the larger ball. With mouse sensitivity adjustments and click speed, she ended up being a capable user, and had a dozen years of loving her laptop before she passed away in 2005.