RFID and its Types

​What is RFID?

RFID- The Radio Frequency Identification:  This technology works with the help of electromagnetic fields, this technology is made up of two parts a reader and a tag or label. The reader has all the tags connected to it and all the information captured by the tag and transmitted, is then captured by the reader and stored and used later to track or information investigation purposes. These tags are placed on a product or a device to keep the track of it.  Every tag has an individual unique code that is also stored in the reader which helps to identify the specific device. The Information stored in the form of electromagnetic waves. There are basically three types of tags.

Active and Semi-Passive and Passive Tag:
Active Tag or battery driven tag and has transmitter and the highest frequency coverage and used for high value products like cars, transport vehicles etc. Semi-Passive Tag is battery driven but no transmitter and has comparatively lower coverage and used for the medium range tracking, which means works in limited and specific range.  Passive-Tag has the lowest frequency and no battery power as it draws the power from the reader itself and used for the in-house products and assets in short range. And they also cost accordingly.

These tags are also differentiated on basis of the frequency that is LF, HF and UHF

LF: Low Frequency RFID tag covers the frequency of 100-130 kHz, reading range of about few cm. large antenna size.
HF: High Frequency RFID tag covers the frequency of approximately 13.56MHz, reading range of about 10cm. smaller antenna size.
UHF: Ultra High Frequency RFID tag covers the frequency of approximately 860-960 MHz, reading range of about 5m compact antenna size.
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Use of RFID Technology:
RFID tags are used in many industries like manufacturing, transport, retail, schooling, pharmaceuticals on toll collection booths, in contactless transactions, in tracking and billing, on airports for tracking baggage’s and many more. It is used to track goods, vehicles, people, objects, etc. It is way better, faster and cost effective than the manual tracking options or devices like barcode scanners which consumes more time and investment, these scanners can capture information of one device at a time and also the barcode needs to be visible whereas the RFID reader can capture information from hundreds of objects or devices at a time and also only by passing by or by being within the specific range of the reader whether the tag is underneath the object or is covered. It is definitely a smart way of tracking the information in this fast world of developing technology that you should opt for to benefit your business or secure your valuable assets.