The sensor logged temperature and relative humidity data versus
time, and the measured values could be stored in the memory
together with the product traceability data introduced by the user
at any time of the logistic chain. The commercial reader/writer was
used for reading and writing data on the smart tag, with a wireless
reading distance of 10 cm, in real-time, sending an activation signal
to the tag which answers forwarding the information loaded
in the memory. The reader processes the information and transmits
it to a computer.