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Ironclad – formally verified, real-time capable, Unix-like OS kernel

https://ironclad-os.org/
249•vitalnodo•10h ago•57 comments

I Am Mark Zuckerberg

https://iammarkzuckerberg.com/
249•jb1991•3h ago•75 comments

Reverse engineering Codex CLI to get GPT-5-Codex-Mini to draw me a pelican

https://simonwillison.net/2025/Nov/9/gpt-5-codex-mini/
66•simonw•5h ago•32 comments

Largest cargo sailboat completes first Atlantic crossing

https://www.marineinsight.com/shipping-news/worlds-largest-cargo-sailboat-completes-historic-firs...
229•defrost•13h ago•161 comments

Marko – A declarative, HTML‑based language

https://markojs.com/
287•ulrischa•15h ago•130 comments

Defeating Kaslr by Doing Nothing at All

https://googleprojectzero.blogspot.com/2025/11/defeating-kaslr-by-doing-nothing-at-all.html
29•aa_is_op•4d ago•0 comments

Runc breaks pods when CPU requests aren't multiples of 10

https://github.com/opencontainers/runc/issues/4982
24•dropbox_miner•5h ago•5 comments

Forth – is it still relevant?

https://github.com/chochain/eforth
29•lioeters•4h ago•12 comments

Tabloid: The Clickbait Headline Programming Language

https://tabloid.vercel.app/
209•sadeshmukh•6h ago•33 comments

Study identifies weaknesses in how AI systems are evaluated

https://www.oii.ox.ac.uk/news-events/study-identifies-weaknesses-in-how-ai-systems-are-evaluated/
347•pseudolus•19h ago•174 comments

Open-source communications by bouncing signals off the Moon

https://open.space/
163•fortran77•6d ago•39 comments

How Airbus Took Off

https://worksinprogress.co/issue/how-airbus-took-off/
63•JumpCrisscross•8h ago•44 comments

Show HN: Hephaestus – Autonomous Multi-Agent Orchestration Framework

https://github.com/Ido-Levi/Hephaestus
42•idolevi•6d ago•3 comments

Control structures in programming languages: from goto to algebraic effects

http://xavierleroy.org/control-structures/
141•SchwKatze•5d ago•17 comments

Avería: The Average Font (2011)

http://iotic.com/averia/
163•JoshTriplett•14h ago•29 comments

Study finds memory decline surge in young people

https://onepercentrule.substack.com/p/under-40s-declining-memory
66•drcwpl•4h ago•26 comments

Debugging BeagleBoard USB boot with a sniffer: fixing omap_loader on modern PCs

https://www.downtowndougbrown.com/2025/11/debugging-beagleboard-usb-boot-with-a-sniffer-fixing-om...
68•todsacerdoti•11h ago•1 comments

Syntax and Semantics of Programming Languages (1995)

https://homepage.cs.uiowa.edu/~slonnegr/plf/Book/
31•nill0•6h ago•18 comments

Show HN: I built a self-hosted error tracker in Rails

https://telebugs.com
4•kyrylo•1w ago•0 comments

Show HN: Sparktype – a CMS and SSG that runs entirely in the browser

https://app.sparktype.org
9•mattkevan•4d ago•3 comments

How to build your own VPN, or: the history of WARP

https://blog.cloudflare.com/how-to-build-your-own-vpn-or-the-history-of-warp/
43•yla92•6d ago•11 comments

IRIX Introduction

http://www.sgistuff.net/software/irixintro/index.html
27•naves•8h ago•10 comments

Grok 4 Fast now has 2M context window

https://docs.x.ai/docs/models
73•hereme888•5h ago•128 comments

Show HN: Geofenced chat communities anyone can create

https://vicinity.social/
32•clarencehoward•6h ago•24 comments

WriterdeckOS

https://writerdeckos.com
175•surprisetalk•14h ago•100 comments

Cloudflare scrubs Aisuru botnet from top domains list

https://krebsonsecurity.com/2025/11/cloudflare-scrubs-aisuru-botnet-from-top-domains-list/
133•jtbayly•17h ago•30 comments

Show HN: PingStalker – A a macOS tool for network engineers

https://www.pingstalker.com/?hn
30•n1sni•4d ago•5 comments

Valdi – A cross-platform UI framework that delivers native performance

https://github.com/Snapchat/Valdi
487•yehiaabdelm•1d ago•199 comments

Judge denies request to exempt Flock footage from Public Records Act

https://www.goskagit.com/news/local_news/court-denies-request-that-it-find-flock-safety-camera-da...
150•p_ing•8h ago•44 comments

Why is Zig so cool?

https://nilostolte.github.io/tech/articles/ZigCool.html
515•vitalnodo•1d ago•461 comments
Open in hackernews

Visa and Mastercard near deal with merchants that would change rewards landscape

https://www.wsj.com/finance/banking/visa-and-mastercard-near-deal-with-merchants-that-would-change-rewards-landscape-fc6a0c78
16•josephcsible•3h ago
https://www.msn.com/en-us/money/companies/visa-and-mastercar...

Comments

k310•2h ago
Syndicated at MSN.

Archive sites returned a gripe about js and adblockers.

https://www.msn.com/en-us/money/companies/visa-and-mastercar...

netsharc•2h ago
Man, looking forward to the paying experience also being enshittified.

Actually with my card in Europe it's already happened: any payment purpotedly being done overseas (even if it's in the local currency) has some % surcharge. One time some pop-up store came to my town, and they brought a card machine from their store in France. Charged in my local currency, and my bank charged me more. Luckily I could call them with much annoyance and get it credited back.

From online chatter I've heard that paying for Netflix or some other foreign service induces this charge too.

Etheryte•1h ago
Sounds like a good time to check out Wise or other similar options. There's no reason to pay extra for something as essential as card payments.
nicolinox•1h ago
Use Revolut for no exchange rate fees added while paying in foreign currencies; also with disposable virtual debit card numbers for extra security when payment gateways or websites do get compromised.
kalleboo•1h ago
> Under terms being discussed, Visa and Mastercard would lower credit-card interchange fees, which are often between 2% and 2.5%, by an average of around a tenth of a percentage point over several years, the people said

Meanwhile interchange fees in places like EU and Australia are more like 0.3%

The Visa/Mastercard duopoly really needs to be broken up somehow.

I live in Asia where there is a cambrian explosion of QR-code based payment methods. At many shops you'll see a list of accepted payment methods like this[0], indicating a healthy amount of competition in payments.

[0] https://corporate.fithouse.co.jp/wp/wp-content/uploads/2021/...

phantomathkg•1h ago
QR Code base system is slow, have security risk and will not work without smartphone.

Proliferation of hundred of QR Code based payments system is not a good thing, you need one that works across all countries.

Outside Visa and Mastercard, we have Amex, Diner, JCB, even China has UnionPay, but unfortunately they are not as popular as a contender of the duopoly.

kalleboo•49m ago
QR is not ideal but as long as Apple keeps such a tight leash on NFC payments, it's the only "open" option. It's ironic that by trying to keep NFC payments so secure, they've instead caused the wide proliferation of far less secure alternatives.

Physical card issuance is too high-friction for new entrants. It's much easier to attract new users with "just install our app" than "enter your home address and wait days for a card to arrive then put it in your wallet and remember to use it"

teyc•16m ago
what's the security risk with QR systems? I've recently come to use one and it relies on software for both parties having connectivity.
ulfw•1h ago
Meanwhile everywhere you pay with a credit card in Australia you have to pay an additional 1-2% because they can get away with it. It's a terrible example really.

(just as an example: https://www.hilton.com/en/book/reservation/rooms/?ctyhocn=SY...)

"Hotel Message

Credit Card Fee

Credit Card payments relating to Australian hotels incur a merchant service fee of 2% in addition to the total amount payable."

FormFollowsFunc•11m ago
It’s kind of how it should be. Otherwise people not paying by credit card are subsidising people who do. It might encourage the card companies to lower their fees.
amarcheschi•3m ago
Managing cash itself though is other additional costs that aren't present when paying by card, having to bring it to bank periodically if you're doing that, ecc
TMWNN•34m ago
>Meanwhile interchange fees in places like EU and Australia are more like 0.3%

Those places don't have the ruthless competition between card issuers and various rewards that occurs in the US. I was paid $1000 by Chase for opening a new card and doing the spend on it that I would have done anyway. I get 5% back on every purchase made at Amazon. I get 3% back for every food-related purchase. I get 2% back for every other purchase. I get rewards for my monthly rent payment. Etc., etc.

>I live in Asia where there is a cambrian explosion of QR-code based payment methods.

No American, used to having his Visa or Mastercard accepted at 99.44% (and that's around the world, not just in the US) and Amex accepted at 97% of places, would want to switch to constantly having to scan gigantic charts such as your example to see whether his card/payment method will work.

In other words, the US has the competition, you spoke of without the inconvenience.

TMWNN•34m ago
>Meanwhile interchange fees in places like EU and Australia are more like 0.3%

Those places don't have the ruthless competition between card issuers and various rewards that occurs in the US. I was paid $1000 by Chase for opening a new card and doing the spend on it that I would have done anyway. I get 5% back on every purchase made at Amazon. I get 3% back for every food-related purchase. I get 2% back for every other purchase. I get rewards for my monthly rent payment. Etc., etc.

>I live in Asia where there is a cambrian explosion of QR-code based payment methods.

No American, used to having his Visa or Mastercard accepted at 99% and Amex accepted at 97% of places, would want to switch to constantly having to scan gigantic charts such as your example to see whether his card/payment method will work.

In other words, the US has the competition you spoke of, without the inconvenience.

jamesholden•1h ago
"Deal under discussion would lower credit-card interchange fees for merchants, but could make it harder for consumers to use rewards cards at the register"

Surprise! The consumer loses again! It's always somehow benefiting everyone but the consumer. Too much control, not enough regulation. People shouldn't be bilked out of funds by paying to use their own money. We are shouldn't be _forced_ to use these service companies for making payments.

jjcob•57m ago
Credit card rewards are not good for consumers. Low fees are good for consumers.