Clocking roulette
There are two forms of Clocking: Wheel Clocking ([1] To keep
track of the results of roulette spins to ascertain patterns
and possibility of wheel bias. [2] The other is to visually
or electronically clock the speed of the wheel in an effort
to predict where the ball will land.) and Player Clocking (Watching
to see which players have been winning and with what methods
in order to use the Chameleon Strategy and mimic their betting
patterns).