How SIM cards work from Citizen Engineer

Another video, this time from a new electronics-hacking series called Citizen Engineer. The first installment premiered at HOPE over the weekend.

Here's the description of the first installment from the series site:

Learn how a SIM card works (the small card inside GSM cell phones) make a SIM card reader, view deleted messages, phone book entries and clone/crack a SIM card.

Modify a "retired" payphone so it can be used as a home telephone and for VoIP (Skype). Then learn how to modify the hacked payphone so it accepts quarters - and lastly, use a Redbox to make "free phone" calls from the modified coin-accepting payphone. [From citizen engineer]

And here's the video:

Citizen Engineer from citizen engineer on Vimeo.