(1) No licensee or the agent or employee of the licensee may be prosecuted criminally or be sued in any civil action for serving liquor to a person under legal age to purchase liquor if such person has presented a card of identification in accordance with RCW
66.20.180, and has signed a certification card as provided in RCW
66.20.190.
(2) Such card in the possession of a licensee may be offered as a defense in any hearing held by the board for serving liquor to the person who signed the card and may be considered by the board as evidence that the licensee acted in good faith.