ENS ZIP/PIN Code Validator

Zip Code Validator App is to act as a zip code verifier. The app will be visible on the product page only. The "Add to cart" and "Buy it now" buttons will be disabled if the zip code is entered. This way the customer will not be allowed to go to the checkout or cart page. It's a white list of serviceable zip codes.The validator can be enabled for all products or for any specific collection.The main purpose is to avail product delivery only to available zip codes.