III. BODY-CENTRIC RFID TAGS
Autonomous RFID tags suited to be put in contact with the
body or in its close proximity are the key enabling devices to
develop body-centric healthcare systems which are fully transparent
to the user. Wearable, and even more, implantable passive
UHF tags have been a technical taboo for a long time because of
the huge power attenuation caused by the human tissues