We be jammin. Now here is an idea that I can get behind. Some churches in Mexico are jamming cell phones because of the growing problem of phones ringing during mass. The $1500 devices supposedly operate only inside the building and don't damage the phones.
Is there any way that these could be installed in classrooms? In the Intro class that I'm a T.A. for, I have heard a phone ring in almost every class so far. Even the professor's phone rang one day. It's ridiculous.