It is the responsibility of each player at the table to keep each other player at the table "honest". By "honest", it is meant that each player indeed has in their hand what they say they have at showdown, that each player's dealing be normal, and that each player's interaction with the pot be accurate.

Verifying each player's hand at showdown is simple work and obligatory. Catching sleight of hand is trickier, especially for a card player not sure what to look for out of inexperience. It should also be stressed as a house rule that any player's interaction with the pot be slow and obvious; no player needs to be making quick action towards or from the pot.