RFId is an abbreviation from Radio Frequency Identification. RFId is automatic identification which enables data transfer between a tag and a reader without eye sight. Each tag is unique with their identifying number and they are re-writable. A tag can be encoded to include information about the product, manufacturing process, time etc.
RFId technology has been used with success for more than 10 years now. Most commonly it serves as a payment card for public transportation or electronic immobiliser in vehicles.
RFId technology can be divided into two parts depending on the voltage the tag requires. If the tag is equipped with a battery it is called an active tag. In other cases the required voltage is transferred to the tag from the reader and thus the tag is called passive.
Active tags are significantly more expensive than passive tags and they are generally used for transportation of valuables and identification of vehicles and containers. Positive side of active tags is a long reading and writing distance (typically 10 meters).
Passive tags are divided into two groups based on voltage and data feeding technique. Low and High Frequency tags exploit electromagnetic induction. UHF, VHF and SHF frequency tags use backscattering of the electromagnetic field to transfer data and required voltage. Passive tags cost is typically between 0.10-5.00 €/piece.
In order to have a functional RFId system you need tags, RFId reader and back-end system for feeding and reading information. Further information about tags and different reader devices can be retrieved from 'Products' category.
Back-end system is a software which gathers information and includes required connections to an existing database. In addition, cabling and programs for reader devices are needed.
Further information about RFId can be found at the AIM global website: