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I was under the impression many private sector companies have already deployed these tools. Just a matter of companies buying/implementing them.

• sjf 7y ago
  Yes, visit tracking has been around for years. Here is one product (https://support.google.com/google-ads/answer/6100636?hl=en https://support.google.com/google-ads/answer/6100636?hl=en), I assume there are many more. I guess it's not more well-known because it's not in the stores interests to publicize it.
  • flowless 7y ago
    Any idea how it works? The site is not very helpful in that manner.
    • closeparen 7y ago
      Probably the same way that Google Maps traffic or “this restaurant is busy now” indications work.
    • verify_sirrah 7y ago
      Presumably using Bluetooth beacons. https://en.wikipedia.org/wiki/Bluetooth_low_energy_beacon https://en.wikipedia.org/wiki/Bluetooth_low_energy_beacon