According to reports in Australia, players have been accused of using a silicon-based adhesive tape on the edges of their bats in order to prevent HotSpot from detecting when a ball has been nicked.
"I find the accusation quite funny," Fox Sports quotes Clarke as saying. "I can't talk for everybody but if it is the case we are talking about cheating, I tell you there is not one person in the Australian changerooms who is a cheat.
"That's not the way we play cricket. I know no one is going to the extreme of saying 'put this on your bat because it will help you beat HotSpot'."
Pietersen reacted angrily to the accusations on Twitter this morning.