Fig. 3. Overview of the existing telemonitoring system (white area) based
on an NFC/RFID and Bluetooth enabled mobile phone (Nokia 6212, Nokia,
Espoo, Finland) acting as an AHD. The developed prototype (green area) was
added to the existing system by means of adapting the J2ME application to
establish the NFC triggered Bluetooth link. Data were collected from several
active devices and passive items using RFID, NFC, and Bluetooth technology
and sent to the remote telemonitoring system using secure https connection
based on 3G/UMTS network.