When Can California Businesses Request a Customer’s Zip Code? In February, the California Supreme Court held that businesses are no longer allowed to request zip codes from customers. In Pineda v. Williams-Sonoma, Inc., the court held that a zip code is “personal identification information” under the 1971 Song Beverly Credit Card Act (California Civil Code § 1747.08). Under the Act, a business may not request or require the cardholder to give any personal identification information during a credit card transaction. The Act includes addresses and phone numbers under personal identification information, and the California Supreme Court held that zip codes…