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This message indicates that the command sent to the reader does not return the serial number and firmware as expected. This is probably because either the current "Reader:" selection is not correct for the RKI target (you can try them all if your not sure which one is correct) or the RKI client does not support the product. For example RKI client v3.3.4 does not support Kiosk III and it would give this message. You will need to use the uDemo to do RKI on a Kiosk III as of the time of this writing.
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