| 摘要 |
<p>A printed article (2), such as a poster or point-of-sale display is described. The printed article comprises a substrate (21), a touch- or proximity-sensitive switch (25) supported on the substrate, a processor (26) configured to generate, in dependence upon actuation of the switch, a message (50) and a wireless interface (26, 28) configured to transmit the message wirelessly.</p> |
