Hey Betz:

Apple applied for a patent for software. This is what they said about it:

"Apple can further determine whether a user pays attention to the advertisement. The determination can include performing, while the advertisement is presented, an operation that urges the user to respond; and detecting whether the user responds to the performed operation. If the response is inappropriate or nonexistent, the system will go into lock down mode in some form or other until the user complies. In the case of an iPod, the sound could be disconnected rendering it useless until compliance is met. For the iPhone, no calls will be able to be made or received."

I wouldn't get an iPhone.