Anyone else think that device is a disaster waiting to happen? The example shows sending a "whoami" command to the device via SMS, and then the device responds "root" via SMS. Uh, what's to keep someone else from hijacking it via SMS for their own purposes? A "bad guy" would have to figure out that there's one on the network, but it would still concern me to have a remote-controlled device on the network that's open to arbitrary SMS-sent commands.