Does RFID technology have any limitations?
Yes! While radio frequency (RF) energy is ideal for non-line-of-sight communication, radio signals do NOT penetrate all materials, the most important of which is metal. This makes RFID tagging of certain products, such as containers of certain types of fluids, or metallic products much more difficult. Attention must be paid to the placement of the reader antenna and the tag in order to ensure a high rate of readability. In addition, the orientation of the tag to the reader antenna can play a large role in the degree of readability in a process system. Consequently, the system integrator must take into account many variables when designing an RFID system. Environmental electrical noise (RFI) can reduce read range as well.
