One luxury hotel has installed an RFID system that tells a bartender the name and specific preferences of a patron approaching the bar, so that he or she can provide personalized greetings and assistance. The system consists of active 433 MHz RFID tags built into key fobs carried by guests, as well as readers that awaken and receive those tags’ transmitted ID numbers, and then forward those IDs back to a gateway, which communicates with a cloud-based server. A tablet computer mounted behind the bar can then display information regarding each customer carrying a fob, such as his or name and gender, along with any unique details about that person, including his or her room number. The bartender can then greet the individual by name.