Systems and methods to implement point of sale (POS) terminals, process orders and manage order fulfillment

This invention describes a system that integrates point-of-sale, online ordering, and store management functions, all accessible through web browsers. Specifically, it focuses on identifying a customer's mobile device when they are near a physical store and then using the store's Wi-Fi to let them place an order directly. The system can also provide personalized discounts or promotions based on the customer's past purchases or interests.