Why not use your mobile in lectures!!!

Imagine a university were you could use your mobile phone to learn from. You could use it to get lecture notes, the lecturer could even send you a text saying that lectures are canceled for the day, which would be better than coming in and finding out when you've tried your hardest to reach on time. But if you really think about I think this idea could work. You could send answers to lecturer's from the questions that they would have sent out to your mobile phone. If you really sat down and thought of the number of ways that mobile phones could be use for teaching it would be endless.