Generally speaking, there will be three cases. The first is the label damage. The uhf rfid label has a chip. If the chip is pressed by an external force or there is high static electricity, it may cause failure. In addition, if the RFID signal is damaged by the antenna, it will easily cause failure. Therefore, RFID electronic tags must not be damaged or torn by compression. Generally demanding RFID electronic tags will be packed in plastic cards to avoid damage by external forces.
The second case is because the uhf rfid label cannot pass through the metal, and the metal can shield the signal. Coupled with the difficulty of penetrating water, water can absorb waves, so the sensing distance is limited. When covered, RFID can penetrate non-metallic or non-transparent materials such as paper, wood, and plastic, and can communicate penetratingly. The bar code scanner must be able to read the bar code at close range and without obstruction
In the actual application of high-frequency RFID electronic tags, we must focus on the fitting position of the 13.56MHz RFID electronic tags. Because of the large size of the tags, the actual allowable space is limited. The RFID electronic tags need to be directly attached to On the metal surface or close to the metal device, such as the 13.56MHz RFID smart tag used in mobile phones, because of space problems, it is often directly integrated on the aluminum alloy stamping shell of the battery. In this way, during the identification process, RFID electronic The tags are susceptible to the eddy current interference of the aluminum alloy metal stamping shell of the battery, so that the actual effective reading distance of the RFID tag is greatly shortened or simply does not respond, and the reading fails completely.