What may cause rfid uhf tags to fail?
The first case: the tag is damaged, there are chips inside rfid uhf tags, if the chip receives external pressure, it may cause high static electricity and may fail. If the signal receiving antenna in RFID is damaged, it may cause failure. When maintaining RFID electronic tags, it is best not to be damaged or torn under pressure. RFID electronic tags with high requirements are usually packed in plastic cards to avoid damage by external forces.
The second case: material shielding, because the RFID electronic tag cannot penetrate metal, and it is difficult for the tag to penetrate water, and water can absorb the wavelength of the signal, so the sensing distance is limited. When covered, RFID can penetrate non-metallic or non-transparent materials such as paper, wood, and plastic, and it can perform penetrating communication. Bar code scanners need to be able to read barcodes at short distances and without obstructions.