| 摘要 |
<p>Methods, systems, and apparatuses for obtaining data from radio frequency identification (RFID) tags are described. A read of data stored in a RFID tag is initiated. It is determined that the read failed. A machine readable symbol of the RFID tag is scanned to identify the RFID tag. The read and scan can be performed by a multi-mode reader device or by separate devices. In an aspect, a portion of the scanning operation can be performed before it is determined that the read failed. In a further aspect, a reversible obscuration partially or entirely prevents decoding of the machine readable symbol. The obscuration is reversed to expose the machine readable symbol prior to scanning the machine readable symbol. An indication can be provided on the RFID tag to indicate to an operator that the machine readable symbol is present.</p> |
