Methods and apparatus for locating RFID tags

A system for item tracking, the system comprising:

• a first radio-frequency identification (RFID) tag attached to a first item, the first RFID tag configured to transmit first RFID signals;
• a second RFID tag attached to a second item, the second RFID tag configured to transmit second RFID signals;
• an RFID tag reader configured to detect the first RFID signals and the second RFID signals;
• and
• a processor communicatively coupled to the RFID tag reader, the processor configured to:
• associate the first item with the second item based on the first RFID signals and the second RFID signals;
• map a position of the first item to a path associated with a person;
• debit an account of the person for the first item based on the path;
• and
• debit the account of the person for the second item based on the association between the first item and the second item.