There is a core principle in human factors and ergonomics - the hand is a lousy holding device. Too many small muscle groups - fatigue easily. More prone to injury. Maintaining neutral postures in wrist a real challenge - static wrist flexion &#38;/or wrist extension causes pain, discomfort, then injury.  iPad is a Musculoskeletal Disorder waiting to happen. Check out our blog post on this issue - <a href="http://bit.ly/ERGOLABiPAD" rel="nofollow">http://bit.ly/ERGOLABiPAD</a>