What is a poker chip card guard cover?

Answer 1

The correct term is Poker card guard or poker card protector. It is a non-gaming token placed on your hole cards during play to protect them. This is done to identify your cards in the event that another players cards touch yours, without the protector your cards would become invalid in play because there would not be any way to distinguish between them, nor can your word be taken as fact. It helps prevent cheating.

A card protector does not necessarily have to be a token, it can be a small object such as figurine. My card protector is a one inch high pewter hummingbird.