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Open Source @Github

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Reparaible and open source paper printer

https://www.opentools.studio/
28•bouh•37m ago•4 comments

Organic Maps

https://organicmaps.app/
680•tosh•7h ago•196 comments

New AI tutor achieves 0.71-1.30 SD effect size in Dartmouth course [pdf]

https://intextbooks.science.uu.nl/workshop2026/files/itb26_s1s2.pdf
86•jonahbard•2h ago•54 comments

The future of Flipper Zero development

https://blog.flipper.net/future-of-flipper-zero-development/
146•croes•3h ago•25 comments

Starring the Computer

https://www.starringthecomputer.com/computers.html
131•gitowiec•4h ago•32 comments

Completing a Computer Science Degree on Coursera

https://notesbylex.com/completing-a-computer-science-degree-on-coursera
10•lexandstuff•19m ago•1 comments

Mr. Baby Paint and accidentally discovering a new cellular automata

https://tekstien-marginaalien-keskus.aalto.fi/residenssi/heikki/blog/004-december-2/
52•jfil•2d ago•9 comments

Dungeon Proof Crawler: learn how to write proofs with RPG

https://dhilst.github.io/algae/game/index.html
9•SchwKatze•39m ago•3 comments

Pint in England

https://dispatch-media.com/the-best-pint-in-england/
9•gripfx•44m ago•0 comments

It's not about physical vs. digital games, it's about ownership

https://popcar.bearblog.dev/its-about-ownership/
210•popcar2•6h ago•154 comments

Introduction to Compilers and Language Design (2021)

https://dthain.github.io/books/compiler/
245•AlexeyBrin•9h ago•42 comments

Show HN: Osint tool that finds exposed files on domains

https://search.cerast-intelligence.com/
5•PatchRequest•1h ago•0 comments

Run Windows 2000 on a DEC Alpha with a new es40 fork

https://raymii.org/s/blog/Run_Windows_2000_for_Dec_Alpha_on_a_new_es40_fork.html
84•jandeboevrie•7h ago•45 comments

We Always Leave Things Unfinished

https://bigreaderbadgrades.substack.com/p/we-always-leave-things-unfinished
13•bryanrasmussen•3d ago•1 comments

Installing A/UX 1.1 like it's the 90s

https://thomasw.dev/post/aux11/
38•zdw•5h ago•13 comments

Y Combinator.singles

https://www.ycombinator.singles/
4•nadermx•42m ago•1 comments

The great blogging collapse: What happened to 100 successful blogs?

https://danielstanica.com/posts/Great-Blogging-Collapse
124•thm•3d ago•99 comments

You need a webring

https://shub.club/writings/2026/july/you-need-a-webring/
30•forthwall•2h ago•21 comments

Papa Johns Can Predict When Your Fridge Is Empty

https://www.adexchanger.com/tv/papa-johns-can-predict-when-your-fridge-is-empty/
20•WaitWaitWha•3d ago•24 comments

Dependencies should be fetched directly from VCS

https://www.arp242.net/deps-vcs.html
5•mrngm•56m ago•2 comments

Cursed circuits #5: capacitance multiplier

https://lcamtuf.substack.com/p/cursed-circuits-capacitance-multiplier
9•surprisetalk•1h ago•0 comments

How the first solo-founder unicorn gets built

https://www.thisandthat.chat/blog/how-the-first-solo-founder-unicorn-gets-built/
3•jreynar•3d ago•0 comments

Airplane Boneyards List and Map

https://airplaneboneyards.com/airplane-boneyards-list-and-map.htm
70•hyperific•1d ago•12 comments

Small Penis Rule

https://en.wikipedia.org/wiki/Small_penis_rule
95•chistev•2h ago•31 comments

Jim Keller's startup is building a factory to mass-produce small chip fabs

https://www.tomshardware.com/tech-industry/atomic-semi-rebrands-as-fab2-and-shifts-operations-to-...
59•logickkk1•2h ago•12 comments

Why DMARC's new "NP" tag can fail with DNSSEC

https://dmarcwise.io/blog/dmarc-np-incompatibility-with-dnssec
37•matteocontrini•6h ago•14 comments

Optimizing an algorithm that's quadratic by design

https://whatchord.earthmanmuons.com/articles/chord-ranking-performance.html
17•elasticdog•3d ago•2 comments

Trouble Transitioning (2025)

https://www.lrb.co.uk/the-paper/v47/n01/adam-tooze/trouble-transitioning
4•measurablefunc•1h ago•0 comments

OpenWiki: CLI that writes and maintains agent documentation for your codebase

https://github.com/langchain-ai/openwiki
75•handfuloflight•4d ago•19 comments

Fast Software, the Best Software (2019)

https://craigmod.com/essays/fast_software/
122•ustad•14h ago•66 comments
Open in hackernews

Papa Johns Can Predict When Your Fridge Is Empty

https://www.adexchanger.com/tv/papa-johns-can-predict-when-your-fridge-is-empty/
19•WaitWaitWha•3d ago

Comments

Cshaya•3d ago
idea is to reach hungry consumers by “knowing what is in their fridge without being too creepy,” lol I think they forgot to realize this is incredibly unsettling and creepy
hx8•46m ago
It's just good utilization of marketing budget.
autoexec•10m ago
Companies have been targeting people with ads when they think they're the most vulnerable for ages. What's bold about this is how not at all subtle it is. "We know there's no food in your fridge. Order a pizza!" seems like something that should make people uncomfortable.
al_borland•3d ago
I find everything about this upsetting. This level of targeted manipulation should be illegal.

It seems like the only way to avoid it is to only shop in person and to stick to mom and pop stores that can’t afford to do all these shenanigans, while also avoiding ads like the plague.

AndrewKemendo•3d ago
Isn’t that the default though?

Maybe I’m rare in that what you describe is literally how I’ve always done it, but are there more people getting groceries delivered than shopping in store now?

Stores seem plenty full to me.

al_borland•3d ago
Even in person at major chains with deep pockets, they can track habits and employ tactics to manipulate behavior.

There has been talking (maybe tests as well) of using facial recognition to manipulate digital price tags on shelves based on the buyer. Several states are already working to pass legislation to block this.

There was that widely published issue years ago of Target starting to advertise pregnancy related items to a teenage girl before her parents even found out she was pregnant. They now actively try to avoid being too targeted, to avoid the creep factor.

They’ve had video monitors at self-checkout in many stores for years now. While I heard at some stores they were just a scare tactic and not hooked up to anything, it’s not beyond the capabilities to use facial recognition at checkout to link a person to their purchases. That’s easier today that it’s ever been.

When ApplePay was rolling out, stores like Walmart were trying to push their own standard called CurrentC, blocking ApplePay. It was a QR code based payment system that would allow them to better track your purchases. ApplePay was a problem, since it generates a random number each time.

Amazon had those stores without registers that tracked uses around the store and what they grabbed. I’m sure that, and now Whole Foods purchases, are used to influence what is pushed on Amazon. That’s not too far fetched.

Almost every store these days has loyalty cards to scan, or ask you to put in your phone number. These are used to track what you buy and tie to you.

Lots of avenues, even in person, to collect and use data.

The key distinction I was making was mom and pop stores. I don’t think those are doing it, unless they are getting bought up by private equity and getting new systems deployed, which I suppose is possible. But the big chains where most people shop are absolutely doing this kind of thing, or trying hard to figure it out.

AndrewKemendo•
gdulli•3d ago
Every fridge between mine and the nearest Papa Johns would need to be empty before I'd consider eating there.
dlcarrier•3d ago
All american fridges contain at least 20% expired condiments, by volume.
xmcp123•1h ago
Not all condiments actually go bad when they expire though. I’m convinced somewhere there’s perfectly edible ketchup from the dinosaurs era somewhere.
rootusrootus•37m ago
Especially when kept in a fridge, since ketchup is shelf stable. In the fridge it should go well past the pull date.
bobbytheblkbear•28m ago
As a reminder people should practice safe eating by using condiments that aren't expired.
subygan•1h ago
Is this a submarine article[1] by instacart to sell their consumers data? feels like a glowing review of the data. And why would papa jhons accept to be a part of this campaign?

[1] https://www.paulgraham.com/submarine.html

morkalork•59m ago
Instacart users should be upset about their data being packaged up and sold. Or maybe there should be half-decent privacy laws that protect them. Otherwise you just get this corporate-orwellianism.

Anyways, I wonder if instacart can predict political affiliation. I bet their data scientists have at least tried.

Grombobulous•40m ago
Half decent data privacy laws are wildly overdue.

My other thought is that companies like Papa John’s that make shitty products are most likely to engage in desperate growth tactics like this.

You know what helps tempt people into ordering pizza? Making good pizza.

The problem is that it’s cheaper to purchase analytics and serve an ad for “pizza” at the literal moment the viewer is out of groceries.

I wonder if their fancy analytics can also tell them how many of these customers regret not just buying groceries after they finish their Papa John’s.

autoexec•7m ago
> Instacart users should be upset about their data being packaged up and sold.

Instacart users should have been upset about that while reading Instacart's privacy policy prior to signing up and refused to use the service in the first place. Having their data being packaged up and sold was something every user already agreed to.

autoexec•34m ago
> There are two things Papa Johns doesn’t like to see

There are three things. Papa Johns also hates to see well compensated employees. They've been successfully sued several times for wage theft, they were forced to stop their “no-poach” policies which prevented franchise owners from hiring workers at other Papa Johns restaurants in an effort to keep wages down, and they insisted that if they had to provide health insurance to their workers they'd pass that cost onto consumers rather than spend a penny of the $87 million in gross profit they were making.

frereubu•32m ago
> The idea is to reach hungry consumers by “knowing what is in their fridge without being too creepy,” said Carrie Drinkwater, chief investment officer at Carat.

What she means is that they want to do it subtly enough so people aren't creeped out, because when it's put like that it really is creepy.

frereubu•24m ago
This has been in the pipeline for a while now. This is an NYT article from 2012 talking about how Target were, well, targeting women they thought were pregnant based on their shopping habits because that's one of the few points in life when people's shopping habits are maleable: https://archive.is/CUo8O
thansz•12m ago
I think there was a Frontline episode that covered this too. A father apparently called corporate, furious that they were sending his household so many baby related coupons when he had a young daughter at home.

It turned out his daughter was pregnant, and her purchases had triggered Target’s prediction model.

If I recall correctly, the corporate takeaway was that they realized they had to hide the targeted coupons among unrelated ones so customers wouldn’t get creeped out by how much the company appeared to know about them.

And that was years ago, before the level of tracking and institutional machinery we have now.

3d ago
I’ve been peripheral to these systems and yes they are pervasive even in “mom and pop.”

Increasingly they are pushed for insurance purposes to automate “loss prevention” and make it auditable and also help build cases.

If the question is how do you get away from surveillance the answer is “you don’t anymore” unfortunately.

At this point it is pervasive and there is no way to avoid it. I’ve been extremely close to surveillance systems my whole career and it’s to the point where if somebody wants to completely surveil you 24/7 they can do it very easily for very little money

al_borland•2d ago
There are levels to it. There is the surveillance, for security, that is what is it. What I’m more opposed to is that surveillance data turning into a revenue stream. Are mom and pop doing that as well? Or maybe the security systems they use are doing it somehow?
Mountain_Skies•54m ago
It needs to be pointed out that for food items, it's already against the law to engage in price customization if the retailer accepts SNAP, which pretty much all grocery stores do. SNAP recipients cannot be charge more than or less than other customers. If Walmart wants to charge someone 50% for a video game because their algorithm says that customer will pay it, they might be able to get away with that, but for food, no one is going to risk losing the ability to accept SNAP.
nianderwallace•16m ago
The NY Times article about Target marketing to expectant mothers - see https://web.archive.org/web/20120216181457/http://www.nytime...

  “My daughter got this in the mail!” he said. “She’s still in high school, and you’re sending her coupons for baby clothes and cribs? Are you trying to encourage her to get pregnant?”

  The manager didn’t have any idea what the man was talking about. He looked at the mailer. Sure enough, it was addressed to the man’s daughter and contained advertisements for maternity clothing, nursery furniture and pictures of smiling infants. The manager apologized and then called a few days later to apologize again.

  On the phone, though, the father was somewhat abashed. “I had a talk with my daughter,” he said. “It turns out there’s been some activities in my house I haven’t been completely aware of. She’s due in August. I owe you an apology.”
Even though they tried to be subtle about marketing pregnancy-related products to new mothers, they didn't go far enough.

Perhaps a graphic, on the front page, above the fold, pointing to pregnancy-related sales on interior pages of the flyer. Non pregnancy-related sales should dominate the front page.