Radio-frequency identification (RFID) readers; Radio-frequency identification (RFID) tags; Access control and alarm monitoring systems; Electron microscopes; Electronic door alarms; Smart card readers; Blank smart cards; Smart glasses; Spyglasses; Secure Digital (SD) Memory Cards; RFID tags worn by pets that activate pet care devices; Rechargeable electric batteries; RFID readers; Wearable activity trackers; Proximity sensors