What is the difference between rfid tag and barcode?

1. Label display

The bar code is marked by the thickness of the printed bar, and the number is known by optical means.

RFID tag can be regarded as the electronic version of bar code, and its working principle is the radio principle. The serial number information in RFID tag chip can be obtained through the processes of electromagnetic wave carrier and modulation.

2. It takes a lot of time for the tag to read

the bar code, so it needs to be read at close range. If the object is not oriented correctly, the reader cannot read it. Bar code readers usually need half a second or more to successfully read a label.

RFID reader can read the RFID tag of Brandeis faster; The reading rate can reach hundreds of tags per second.

3, label use environment

The requirement of bar code alignment reading limits the durability of bar code and its reusability. Paper printed bar codes, damaged bar codes, bar codes covered with frost and snow, and bar codes damaged by water can not be read under harsh conditions.

RFID tags are usually more durable, not affected by the environment, and can resist high temperature, water, acid and alkali and other harsh environments.

4. Label storage capacity

Barcode data storage capacity is small, only a few hundred bytes.

RFID data storage: compared with traditional tags, it has a large capacity (1-124 bit) and the data can be updated at any time.

5. Anti-counterfeiting ability of labels

The contents of barcodes cannot be changed, but they can be copied and reused.

unlike bar codes, RFID tags have unique identifiers that cannot be copied and are unique numbers. The content of the tag can be read and written repeatedly.