Methods, systems, and apparatuses to improve an interface between customers and products in warehouse, shopping, and additional environments, including an improved interface with items associated with RFID tags, are described. In an aspect, a product database associated with a merchant is downloaded from a computer system into a mobile device. The downloaded product database is stored. A user interacts with data of the downloaded product database on the mobile device. In a further aspect, a radio frequency identification (RFID) tag is read by the mobile device to determine an identification number corresponding to the RFID tag. The identification number of the RFID tag is transmitted to the computer system. A response from the computer system is received that includes information regarding an item associated with the RFID tag.