What a shotty review. No mention was made of using this as a full-time solution. Instead if moving one's arm a few inches at a time, the user has to accurately move his/her head at different angles and hold it completely still to keep the pointer steady.

What's the problem with this? Ask any doctor. Your head weighs between 7-12 pounds and requires resting at various angles during any amount of time in front of the computer.

Using this device for more than an hour or two will probably result in aching shoulders and a migrane.

Regards,
Victor