Methods and apparatus to monitor shoppers in a retail environment

Methods and apparatus to monitor shoppers in a retail environment are disclosed herein. In a disclosed example method, a first signal is transmitted via a first device in a first direction to a second device and a second signal is transmitted via the first device in a second direction to a third dev...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ALONSO RAFAEL E, MARTENSEN FRED A, RAMASWAMY ARUN
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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