Apple patents everything! Why, in the license agreement with the iphone, only the authorized user of the iphone (The person who the iphone is registered to) is allowed to
actually use the multi-touch features on the iphone. Everyone else caught using these features on the iphone, is subject to civil action not mention that it voids the warranty on the iphone. Just try taking your iphone into the genius bar for service and watch how fast they ask if you let anyone else use your phone. if you say yes, they say "sorry, but you violated your user agreement with apple"

Then they take your information and sue you.