Under what circumstances the RFID electronic tags cannot be read?

The RFID system is mainly composed of tags, readers and antennas. In practical applications, the electronic tag is bound to the item, and the signal is transmitted to the system through the antenna and the reader to form an automatic data collection work. As an important part of the RFID system, whether the RFID electronic tag can be successfully read or not affects the entire system.

Under what circumstances the RFID electronic tags cannot be read usually?

1. RFID electronic tags are damaged

there are chips and antennas in RFID electronic tags . If the chip is pressed by external force or high static electricity, it may fail, and if the RFID signal receiving antenna is damaged, it will also cause failure. Therefore, the RFID electronic tag should be taken care to avoid pressure damage or torn. Generally, RFID electronic tags  will be packaged in plastic cards to avoid external damage.

2. Influenced by interfering objects

RFID electronic tags cannot penetrate metal. When the tag is blocked by metal, the reading distance of the RFID inventory reader, will be affected, or even impossible to read at all. At the same time, the radio frequency information of RFID electronic tags is also difficult to penetrate water, and if it is blocked by water, the sensing distance will also be limited. In general, the signals of RFID tags can penetrate non-metallic or non-transparent materials such as paper, wood and plastic, and can carry out penetrating communication. If the usage scene is special, it is necessary to customize anti-metal labels or electronic labels with other characteristics, such as high temperature resistance, waterproof, etc.

3. The reading distance is too far

RFID electronic tags can be read in different reading distances based on different manufacturing processes, different application environments, different RFID mobile terminal readers . If the reading distance is too far, it will affect the reading effect.