RCW 19.192.020: Verification of identity by merchant/retailer—Prohibition on verification void.

(1) Any provision of a contract between a merchant or retailer and a credit or debit card issuer, financial institution, or other person that prohibits the merchant or retailer from verifying the identity of a customer who offers to pay for goods or services with a credit or debit card by requiring or requesting that the customer present additional identification is void for violation of public policy.

(2) Nothing in this section shall be interpreted as: (a) Compelling merchants or retailers to verify identification; or (b) interfering with the ability of the owner or manager of a retail store or chain to make and enforce its own policies regarding verification of identification.