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2.6.14 Get the Event Counters

       GETEVENTCOUNTER

This function return one status line with the current values of the event counters. The event counters are useful to avoid polling by delaying a poll until something has changed. The values are decimal numbers in the range 0 to UINT_MAX and wrapping around to 0. The actual values should not be relied upon; they shall only be used to detect a change.

The currently defined counters are are:

ANY
Incremented with any change of any of the other counters.
KEY
Incremented for added or removed private keys.
CARD
Incremented for changes of the card readers stati.