Re: Trying to use simtrace with 4FF NFC/SIM cards

I think the best way to analyze this is to understand the exact voltage, clock rate and Fi/Di values your card is operating on on the working reader(s). Most likely at least one of the parameters is different on the non-working readers. You should be able to figure all the related values out if you talk CCID directly to the USB device, or extend / "hack up" the ccid driver you're using. Alternatively, an oscilloscopse should also be able to tell you related information. Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)