What is the difference between passive and active RFID systems?
Answer
Active systems have a much longer range than passive systems due to having an internal battery. Because of this an active tag will be much larger and more expensive than a passive tag. The passive tag will basically convert the RF signal from the Interrogator or reader and turn it into energy to return the signal.
Active tags will often be found on larger sized shipping containers/products whereas a passive tag, due to its small form factor can be used on any variety of products, containers, boxes...etc.
Passive tags are usually more durable than active tags. While some active tag batteries have a lifetime of 10 years, depending on the frequency of use, passive tags do not have the handicap of internal power requirements.
Depending on the harshness of the environment, an industrial grade passive Read-Only tag can last longer than your average person.
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