rate radios and sensors. Non IP-based devices such as RFID
tags can be: (i) passive, which do not incorporate a power
supply, because the electrical power induced by the reader is
enough to transmit data, or (ii) active, which use their own
battery for data transmissions (Tesoriero et al., 2008). The
main disadvantage of the non IP-based sensors is the lack of
network connectivity without the need of gateways.