[refuse]

I know Kroger (or QFC) has been doing this for ~6 or 7 years. My wife would start getting targeted ads for things that were in areas we lingered around for more than a few seconds.

FWIW Lowe's does the same exact thing. Probably IMEI harvesting but IIRC Lowe's is looking at or has implemented facial recognition. If not to identify your face outright, at least to see what you're focusing on in-store.

More reason to shop local at the hippy stores. Or start gardening.

[blamazon]

One way to see the level of indoor location precision available to them is to open the mobile app in-store map of a retailer which often shows a little real-time dot to represent your location.

(Readers should note, of course, that this is willingly giving them loads of data from that device)

Target's in particular is crazy precise in-app.

[2OEH8eoCRo0]

Do you leave Bluetooth on all of the time?

[refuse]

IMEI is tied to cellular radio and has been used to track people's movements through stores for quite a while now.

/notanexpert