| 摘要 |
Systems, apparatus, and methods for utilizing external attached signs in conjunction with display enabled wireless devices are provided. Wireless devices transmit signals to and receive signals from disconnected systems preferably comprising one or more access points or hand-held devices. The access points and hand-held devices preferably communicate with a server which operates to manage the wireless devices. Optionally, the wireless devices take various actions depending on the presence or absence of an attached sign. These actions may include initiating a communication, changing a displayed message, or flashing a LED. Optionally, the server receives messages from the wireless devices containing information relating to the presence or absence of an attached sign and transmits a message back to the wireless devices in response. |
