| 摘要 |
A system and method is provided for monitoring the viewability of a display, and includes a point-of-sale display, at least one sensor that detects at least one of presence, placement and viewability of a display, a central processing unit that receives an output from the sensor and compares the output with a predetermined value to determine if an abnormal condition affecting viewability of the display exists, and a communication device that communicates an alarm signal produced by the central processing unit under abnormal conditions to a remote recipient or to a storage device.
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