ZIP Lock - Restrict ZIP Codes is a versatile Shopify app designed to help store owners manage product accessibility based on customers' shipping ZIP/postal codes or state/province. By setting up customizable rules, merchants can control which products are available to specific regions, ensuring compliance with location-based regulations or business strategies. When customers attempt to purchase restricted items, the app provides a clear error message at checkout, preventing unauthorized orders. ZIP Lock allows merchants to create unlimited rules that can focus on all products, specific items, or distinct collections, offering flexibility in operations. The app is seamlessly integrated into Shopify’s checkout UI, eliminating the need for complex theme modifications. Users can also benefit from bulk importing ZIP codes via spreadsheets, maintaining a comprehensive log of blocked checkouts, and crafting personalized error messages to enhance customer experience.