| 摘要 |
<p>The product comprises an imager (21), a coded data source (11), and a variable property having a first use, with light emanating from the coded data source (11) representing the first use and specifying which portion of light detected (12) by the imager (21) represents the variable property, where the coded data source (11) can be from a plurality of coded data sources and the imager (11) can be from a plurality of imagers (21).</p> |
