he wired his DSLogic Plus logic analyzer up to the VCC, CLK, RST, and I/O pins, then found a convenient place to attach his ground wire. After a bit of fiddling, he determined the SIM card was ...

The SIM card in your cellphone talks to the contactless ... That lead [Nils] to some very sensitive analog sniffer circuit design that he’s just come up with. If you get interested in SWP ...