Abstract: Functionality can be implemented to transmit advertisements to customers who have registered to receive promotional messages from a business. Detecting wireless devices in the vicinity of the business, determining if the detected wireless device is registered to receive promotional messages, and transmitting the promotional messages to the detected wireless device can help businesses build customer loyalty, increase brand recognition, provide positive brand association against competitors, and receive repeat sales. Providing registered customers with additional options of rejecting incoming promotional messages or unsubscribing from the customer database can reduce the number of unsolicited messages transmitted.