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

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161–170 of 243 posts

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

#161
post #77

Earlier quoted context omitted.

Yes. Don't hassle the poor clerks. They aren't in charge of any of this stuff and certainly don't have the power to change it. Just say "no" and move on.

Well that’s how nothing ever changes. Personally, I will hassle the clerk until he seriously considers working somewhere else. That’s how we get change!

You get change by regulating what the industry can collect in the first place. Otherwise all you have is an ever replacing stream of low paid workers.

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

#162
post #154
post #148

Earlier quoted context omitted.

"I've seen this weapon used against other people, but I have nothing to worry about, they'll never turn the gun on me" Also can be stated as "First they came for the socialists, and I did not speak out—because I was not a socialist."

Are there examples of snack food purchasing habits being used against somebody?

http://web.archive.org/web/20071221122513/http:/cqpolitics.c...

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

#163
post #143

Earlier quoted context omitted.

> Are you buying incriminating goods at the grocery store You mean hummus, right? Or do you mean the store selling of your eating habits pretty much every entity out there. Pretty sure eating isn't HIPAA related, but correlated to potential health.

So the threat model is to prevent insurers from gaining knowledge that you buy 5L of sugary soda per week? I agree there is some privacy concern, but I am having a hard time articulating how or why that data might actually impact a person in a net negative way.

What if I buy everything gluten-free?

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

#164
post #143

Earlier quoted context omitted.

> Are you buying incriminating goods at the grocery store You mean hummus, right? Or do you mean the store selling of your eating habits pretty much every entity out there. Pretty sure eating isn't HIPAA related, but correlated to potential health.

So the threat model is to prevent insurers from gaining knowledge that you buy 5L of sugary soda per week? I agree there is some privacy concern, but I am having a hard time articulating how or why that data might actually impact a person in a net negative way.

http://web.archive.org/web/20071221122513/http:/cqpolitics.c...

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

#165
post #142

Earlier quoted context omitted.

IME at Safeway if you don't use a "club card" you end up paying nearly double for many items. Are there ways around this?

If you get two or three keychain cards share them among friends?

This is good because it pollutes the pool of data.

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

#166
Stores are happy to sell all your data to advertisers for now, but what they really want is to use it themselves. Their wet dream is to get us to accept Personalized Dynamic Pricing (https://www.researchgate.net/publication/338776528_A_special...) which means that once the store knows who you are (either by your photo, or by detecting the phone in your pocket, or by your loyalty card) they will customize the prices at the register just for you in order to take as much money from you as they think they can get away with.

They can drive up the price on the items you always buy until you stop buying as much, or lower the price on certain high price items just enough to attract you to them before they start creeping prices back up. They can use data like what you've bought from them before as well as data like your income level, who the members of your household are, and what your shopping habits elsewhere are.

Store loyalty cards are seen as a great way to start collecting useful data and get consumers used to the idea that some people get (or even deserve to get) different prices than other people. Be cautious of any place that asks you to use an app or scan a QR code to see their menu or prices, and resist the idea that stores should be allowed to discriminate by charging certain people more than others for the same product.

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

#167
post #147

Earlier quoted context omitted.

Club card application information isn't usually validated, you can sign up for one with bogus information.

I think that's less valuable than one would expect for the average person. For example if you rode the bus to the store and paid in cash then you'd have a low correlation coefficient. The issue is most people (at least in the US) drive a car with a publicly registered license plate and use the same credit cards each time. And with things like facial recognition becoming more common it may be near impossible to hide w…

> drive a car with a publicly registered license plate

Where is that info publicly available?

Most people are too lazy to get a PO Box and trust paperwork to hold their assets. LLCs work for this, also.

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

#168

Earlier quoted context omitted.

IME at Safeway if you don't use a "club card" you end up paying nearly double for many items. Are there ways around this?

Local area code + 867-5309

One of the best rock tunes ever written, "8675309 Jenny Jenny" was a blazing meteoric hit by a band that produced few others:

Rendition of the song (bet you can't play it just once):

https://www.youtube.com/watch?v=boaJCrHNRMA

Story of the song (along with a history of problems/facts about the phone number itself before and after the song hit):

https://en.wikipedia.org/wiki/867-5309/Jenny

The band:

https://en.wikipedia.org/wiki/Tommy_Tutone

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

#169
post #83

Earlier quoted context omitted.

Anywhere that collects your phone number in exchange for coupons at the checkout (cough cough Old Navy) or your email to send you a digital receipt (looking at you Home Depot) is probably sharing or selling your data.

Not probably. They're certainly selling your data.

Unless you are in the EU, where it's illegal thanks to GDPR.

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

#170

Sometimes it feels ridiculous how much OPSEC I need to employ to buy anything at the grocery store. I walk or bike to the store to not reveal a license plate. All radios and sensors on my handset are turned off. I wear a mask to thwart facial recognition cameras. I pay cash.

But if you block ads and third-party cookies, which I'm 146% you do with this mindset, that data collection is of no use either way.

Is that actually true? They still might be using you for demographic details, and indirectly targeting ads at you for things you can't easily block.
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