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Forget Milk and Eggs: Supermarkets Are Having a Fire Sale on Data About You

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11–20 of 243 posts

Re: Forget Milk and Eggs: Supermarkets Are Having a Fire Sale on Data About You

#11
post #2

I’ve just always assumed that big stores were collecting and selling every iota of data they could. I recall reading about retailers using license plate scanning in their parking lots in the early aughts.

Yes it's not a surprise, but I think what is surprising is the billion dollar profit this one store is claiming the data are worth.

Re: Forget Milk and Eggs: Supermarkets Are Having a Fire Sale on Data About You

#12
post #9

A genuine question: why does this matter for customers? Is there any foreseeable bad outcome for customers?

Loss of privacy. I wouldn’t want a third-party knowing I purchased certain medications (even some that are sold OTC).

Re: Forget Milk and Eggs: Supermarkets Are Having a Fire Sale on Data About You

#13

And that's why I pay cash and use Jenny's Number with the local area code for the store discount program. I know Target also tracks your cellphone through the store too, I haven't bothered putting in airplane mode when I shop, so hopefully they aren't correlating that with the purchases.

I googled "Jenny's Number" thinking it was a SaaS platform

Yeah, not quite sure what I was expecting.

Re: Forget Milk and Eggs: Supermarkets Are Having a Fire Sale on Data About You

#15
post #7

And that's why I pay cash and use Jenny's Number with the local area code for the store discount program. I know Target also tracks your cellphone through the store too, I haven't bothered putting in airplane mode when I shop, so hopefully they aren't correlating that with the purchases.

This is fine, but it's not really about tracking you , it's about tracking the habits of shoppers in aggregate, of which you are a participant. (Yes, having your real address to mail flyers is a bonus but not the end goal.) The only viable solution that comes to mind is to shop at places that don't perform this sort of tracking/loyalty card/etc. and continue to pay in cash. The only stores around me that fit this bil…

> his is fine, but it's not really about tracking you, it's about tracking the habits of shoppers in aggregate, of which you are a participant. (Yes, having your real address to mail flyers is a bonus but not the end goal.)

Like hell it is. This is an article about Target back in 2012, that identified a pregnant underage girl purely from her purchasing record. 11 years ago.

https://www.forbes.com/sites/kashmirhill/2012/02/16/how-targ...

Target also made their own payment terminals so they could get PII from your cards, and then make a virtual loyalty card from that data. Walmart did similar as well.

> The only viable solution that comes to mind is to shop at places that don't perform this sort of tracking/loyalty card/etc. and continue to pay in cash. The only stores around me that fit this bill are convenience stores and a chain ran by an Amish conglomerate.

With facial recognition being a nearly solved problem, cash won't even save you.

What will save us? Strong federal laws similar to the GDPR.

Re: Forget Milk and Eggs: Supermarkets Are Having a Fire Sale on Data About You

#16

And that's why I pay cash and use Jenny's Number with the local area code for the store discount program. I know Target also tracks your cellphone through the store too, I haven't bothered putting in airplane mode when I shop, so hopefully they aren't correlating that with the purchases.

You should be alright if Bluetooth and WiFi are off. Unless you think they're spoofing a cell tower.

Does one need to spoof a tower (actively transmit/handshake) or can one simply listen? Is it virtually impossible to do some kind of phased array that tracks the location of mobile transmitters since they're encrypted? Maybe the transmissions aren't frequent/continuous enough unless the user is actively using data or on a call... I'm sure many people here know way more than I.

Re: Forget Milk and Eggs: Supermarkets Are Having a Fire Sale on Data About You

#17
post #4

Nothing really is done with this data, ultimately. It gets fed to 'analysts' who make models, and if those models don't agree with the decisions the executives are already making, it just gets ignored.

Still the data is collected in data pools, where somebody forgets to delete it a d later somebody does some more worthwhile analysis ...

Re: Forget Milk and Eggs: Supermarkets Are Having a Fire Sale on Data About You

#18

And that's why I pay cash and use Jenny's Number with the local area code for the store discount program. I know Target also tracks your cellphone through the store too, I haven't bothered putting in airplane mode when I shop, so hopefully they aren't correlating that with the purchases.

FYI, Jenny’s number is 867-5309.

Re: Forget Milk and Eggs: Supermarkets Are Having a Fire Sale on Data About You

#19
post #9

A genuine question: why does this matter for customers? Is there any foreseeable bad outcome for customers?

Maybe - insurance companies could start using your shopping habits to inform your risk group and therefore premiums. I could see other nefarious uses like tracking when female customers get pregnant for purposes of enforcing abortion bans or targeting of individuals by anti-abortion groups.

I think it's a mistake to underestimate the imagination of insurance adjusters and bureaucrats when it comes to how personal data could be used.

Re: Forget Milk and Eggs: Supermarkets Are Having a Fire Sale on Data About You

#20
post #18

And that's why I pay cash and use Jenny's Number with the local area code for the store discount program. I know Target also tracks your cellphone through the store too, I haven't bothered putting in airplane mode when I shop, so hopefully they aren't correlating that with the purchases.

FYI, Jenny’s number is 867-5309.

Entertainingly I -used- to do this at Walgreens, except now they started asking to verify the zip code associated with the account. :-)
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