[zorrophreak]

The way the SIM works is restricting any internet activity not routed through TOR. TOR routing has to be done manually on the user's phone the way I see it, I suppose by using Orbot on Android. If the user is on regular internet, the data just won't go through, but that's likely just done specially through the ISP not so much the SIM. I could be wrong though.

Still a very cool idea and one that definitely encourages safer, more secure internet usage.