In-store interaction and location system for interfacing users with products

An in-store interaction and location system, comprising:

• at least one RF backscatter transmitter, hosted on a device, configured to emit a Radio Frequency (RF) signal on a frequency;
• a set of passive RF backscatter tags, each associated with a respective one of a plurality of products in a given store area and configured to reflect and frequency shift the RF signal to a different frequency;
• and
• at least one RF backscatter receiver, hosted on another device, configured to read the plurality of products on the different frequency by detecting a distributed ambient backscatter signal generated by a reflection and frequency shifting of the RF signal by the passive RF backscatter tag,
• wherein at least one device selected from the group consisting of the device hosting the at least one RF backscatter transmitter and the other device hosting the at least one RF backscatter receiver is configured to maintain an inventory and a location of the plurality of products in the given store area and provide the inventory and location to a user device, and
• wherein the at least one RF backscatter transmitter and the at least one RF backscatter receiver coordinate usage of multiple channels for backscattering, with at least one of the multiple channels configured for transmission and at least one of remaining channel from among the multiple channels configured for reception, and wherein the passive RF backscatter tag comprises a passive non-linear device to generate a mixed frequency detected as the distributed ambient backscatter signal on the at least one of the remaining channels.