Eventually in the satellite world, card emulators took over and only the receiver was a vector of attack, but then the receivers started getting simulated too.

Eventually in the satellite world, card emulators took over and only the receiver was a vector of attack, but then the receivers started getting simulated too. The nice thing about emulators is that you could intercept calls that you wanted and send your own response while still taking any and all updates. Hard to break when you have more control than they do.