What is one of the features that must be incorporated in real id card?

One of the key features that must be incorporated in a Real ID compliant card is a laser-engraved or embossed "star" on the top right corner.

This star serves as a visual indicator that the card meets the minimum security standards outlined by the Real ID Act. It signifies that the card has been issued by a state that complies with the federal regulations, ensuring its authenticity and validity for official purposes like boarding domestic flights or entering federal facilities.