GateKeeper: State/ZIP Blocker

Block checkout for restricted US states and ZIP codes. Unbypassable, server-side enforcement.

GateKeeper blocks orders shipping to US states or ZIP codes you restrict. Rules run inside checkout as a validation function, so customers cannot bypass them. Restrict all products, or only products with specific tags, and add large ZIP code lists: one rule can cover every US ZIP code. When an order is blocked, the customer sees a message you write. GateKeeper also includes an optional 18+ or 21+ age gate for your storefront. It runs on any store and needs no theme changes.

• Block checkout by US state, ZIP code, or country
• Blocking cannot be bypassed by customers at checkout
• Restrict all products or only products with chosen tags
• Optional 18+ or 21+ age gate for your storefront
• Maintained rulesets with statute citations for restricted items