Since an active RFID is constantly sending out a signal, it makes an excellent choice for those looking for up-to-the-minute live tracking, such as in tolling and real-time vehicle tracking applications. They are an expensive product, but they do offer a long read range, which may be preferred depending on their application.
Passive RFID tags are a much more economical choice than active RFID tags, and cost around 20 cents each. This makes them a popular choice for supply chain management, race tracking, file management, and access control applications. While a passive RFID tag does not require a direct line of sight to the RFID reader, it has a much shorter read range than an active RFID tag. They are small in size, lightweight, and can potentially last a lifetime.
Since active RFID tags feature a larger, more rugged design than passive RFID tags, they are better suited for applications where durability is required. They are frequently used in toll payment transponder systems, cargo tracking applications, and even in devices used to track people.