Love the iPad! Love how it's changed our fields of AT/AAC so radically! But people that cannot point with a finger cannot access the beautiful interface and computing experience, from instructional materials, to web surfing, email, Facebook, Twitter, and all that able-bodied persons take for granted.
For those that find accessing the iPad directly ('direct select') to be a challenge, but don't want to resort to an assistive device (such as my iPad VoiceOver Controller, or a switch interface that gives 'global' ipad access), then, if they have fine motor control over their hand, I can *give* them a pointer finger!
With my spiffy Velcro strap, that secures around the hand *and* the wrist, and can be cut to need, my HandPointer can be positioned in many positions.
More information: http://www.rjcooper.com/tablet-handpointer/index.html