|
Modulated backscatter technology allows readers to communicate with tagged objects traveling in excess of the normally specified 100 miles per hour (160 kilometers per hour). This technology can also operate from as far away as 100 feet (30.5 meters).
This highly stable, reliable, and reflective method of wireless reader-to-tag communications is the transportation industry's premier method of automatic equipment and vehicle identification.
Key reasons for using reflective, or passive, tags over traditional transmitter or "active" tags include:
- Because the tag simply reflects the reader's signal, there are no frequencies to synchronize, and interference from other radio frequency sources is rare.
- Frequency changes can be made in the reader, eliminating tag recall.
- Reflective tags require less internal power than traditional transmitter tags so they have a longer life. They also have greater range than bar code, infrared, or other passive systems.
|
