Difference between RFID and two-dimensional code

Difference between RFID and two-dimensional code

RFID technology is often compared with bar code two-dimensional codes. Some even call RFID "smart bar codes", but this metaphor masks the true advantages of RFID and makes users unable to recognize the essential difference between it and bar codes. RFID's capabilities in automatic identification and data collection are far superior to barcodes and two-dimensional codes. It can not only store more information, is suitable for complex and harsh environments, but also can work without manual visibility, even in In a networkless environment. These advantages of RFID enable more new applications for asset identification and tracking, and these applications are impossible for bar codes and two-dimensional codes.

There is no need for manual attendance and automation. Scanning barcodes or QR codes to track assets is completely feasible, but only if someone has to do it, such as a warehouse administrator tracking products in and out of the warehouse. But if you need to track assets in spray shops, high-temperature and high-pressure working environments or chemical cleaning, only high-intensity RFID tags can do the job. Therefore, RFID technology can easily realize the automated management of assets in hazardous environments.

RFID tags have unique identification codes. The RFID tag contains an Electronic Product Code (EPC) that gives each asset a unique identification code. Such an identification code makes the asset it represents uniquely identifiable, which is critical in the application of item-level management.

Data always follows assets. A series of serial numbers represented by traditional one-dimensional codes must be connected to a back-end database to obtain asset information. RFID has the function of storing data (large-capacity RFID tags can even store 32kb of data), users can encode the tags according to their own needs, and can access asset information even without a network connection. The information written into the tag can also be modified, either on the database side or by reading and writing the tag.

Size doesn't matter, speed matters. Bar codes have strict restrictions on the print size. Bar code shaped bar codes are usually longer and are not suitable for smaller assets. Although QR codes can be used in a small space, there are still printing requirements. Today's RFID tags not only overcome the challenges of using small assets, they can also be embedded inside the asset without affecting its use. Embedded RFID tags developed by Outege can be embedded in metal assets and are suitable for almost all types of metal assets. It is worth mentioning that the QR code scanning speed is about 250 assets per hour, and the reading rate of RFID reaches 25,000 assets per hour.

No artificial visual requirements. Although the production cost and process of bar codes are relatively low and simple compared to RFID tags, the application of bar codes does have obvious limitations-you can only scan it if you see the bar code. This means that the asset must be placed with the side facing the bar code facing outwards for easy manual scanning. RFID doesn't have to be so troublesome, you don't need to see the tag when reading the tag. As long as the tag is within the read and write distance, you can easily scan all tags with a handheld or fixed reader, and get information quickly and accurately.

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