[liberationtech] Recently sold sensenetworks has creepy buying habits tracking feature

[Nick]

Quoth duncan at openmailbox.org: 
> However, what shocks me is the claim that they're able to track
> users buying items in physical stores. How they do this, is
> completely beyond me.
> (https://www.sensenetworks.com/retail-retargeting/)

I'd guess this is done primarily using those "loyalty cards". I 
don't know what credit card privacy laws are like in the USA, 
presumably not weak enough to allow banks to share buying 
information directly with marketers?

Oh, I just read the page you're linking to; it does sound more like 
the wifi thing that was mentioned ("at other locations near the 
retailer"), but I didn't realise that was already widely deployed.  

It's probably a combination of several horrible technologies.

Nick