|Passive RFID Information
Some advantages of a passive
RFID tag are:
- It functions without a battery; passive RFID tags can have
a useful life of twenty years or more.
- It is typically much less expensive to manufacture passive
- It can be much smaller than active RFID tags.
- Passive tags are lighter and are less expensive then the
more powerful active tags.
|Some disadvantages of a passive RFID tag are:
- The tag can be read only at short distances, from a few
inches to several feet at most. This limits the device for
- It may not be possible to integrate with sensors that use
electricity for power.
- The tag remains readable, even after the item to which
the tag is attached is no longer being tracked.
- Requires a higher-powered reader than active RFID tags
- The orientation of a passive RFID tag must be just right
or the reader won't locate it.
- Passive tags also have difficulty sending data through liquids
Uses of passive RFID tags:
- Consumer goods
- Asset tracking
- Vehicle identification
- Inventory control
- Access control
- Entry pass, toll
- Electronic toll
collection at toll booths
- Rapid Transit
- buses, ferries, trains and subway
- Library book or
- ID Badges
- Case, pallet,
and shipping container tracking
- Supply chain management
- Work-in-process tracking