2.6.15 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:

ANY

Incremented with any change of any of the other counters.

KEY

Incremented for added or removed private keys.

CARD

Incremented for each change of the card reader’s status.