all card-counting systems require bet variation and
strategy adjustments that are very similar, it really
doesn't matter which particular system the player
uses or the supervisor knows. If a casino boss is
proficient and watches your play long enough, he will
probably be able to tell whether or not you're counting.
For this reason, many counters "cool it"
if the pit boss comes over to watch. They begin flat-betting
(making the same bet regardless of the count) and
in many cases revert to playing basic strategy only.
This continues until the pit boss leaves to go hound
another player. Unfortunately, it's hard (and unnatural)
to be constantly on the lookout for floor personnel
while playing; while one pit boss is leaving, there
may be another right behind you still watching.
In some casinos, a suspicious pit boss may initiate
countermeasures on his own. At other places, he may
call a buddy over and they may both stare you down
for a while. This "heat" is designed to
unnerve card counters and is remarkably effective.
At larger establishments, roving expert counters are
sometimes employed and called upon to evaluate the
skill of a player who is suspected by the pit. The
expert may be brought into the pit to observe the
player for 15 to 30 minutes before rendering judgment.
Other high-end casinos employ even more sophisticated
means. There is now card-counting software that allows
surveillance staff to input, by voice, a player's
wagers, cards, and strategic decisions. The program
then rates each player by estimating the player's