Hacker News: j4hdufd8

New comment by j4hdufd8 in "Google's requirement for developers to be verified threatens app store F-Droid"

j4hdufd8 — Wed, 08 Oct 2025 08:36:18 +0000

"Silicon baked private keys" are really vague buzzwords. That's pretty much standard and it can be implemented in a variety of ways.

Not sure why you're calling this non-unlockable. Everything is unlockable with enough money.

New comment by j4hdufd8 in "Google's requirement for developers to be verified threatens app store F-Droid"

j4hdufd8 — Tue, 07 Oct 2025 21:34:04 +0000

What is non-unlockable secure boot?

New comment by j4hdufd8 in "AMD signs AI chip-supply deal with OpenAI, gives it option to take a 10% stake"

j4hdufd8 — Mon, 06 Oct 2025 15:50:11 +0000

GPUs are also used to speed up inference (the math is virtually the same). You think your ChatGPT queries are running on x86 servers?

New comment by j4hdufd8 in "AMD signs AI chip-supply deal with OpenAI, gives it option to take a 10% stake"

j4hdufd8 — Mon, 06 Oct 2025 14:04:09 +0000

> A tax on the mistaken believe that NVidia has an monopoly on putting transitions in a particular configuration which they obviously don't

NVIDIA doesn't place transistors in particular configurations. Foundries do that for them. And it is currently common sense that the software is the moat, not the hardware design.

Good luck changing the ecosystem to use AMD.

New comment by j4hdufd8 in "Personal data storage is an idea whose time has come"

j4hdufd8 — Sun, 05 Oct 2025 12:45:05 +0000

...while selling you crap you don't need because they follow you everywhere.

New comment by j4hdufd8 in "Jeff Bezos says AI is in a bubble but society will get 'gigantic' benefits"

j4hdufd8 — Sat, 04 Oct 2025 12:43:42 +0000

> rather than to wave at the street (which is what I used to do to get a ride.)

Ummm taxis aren't everywhere like NYC or something. Broadly speaking Uber will pick you up in an arbitrary place and take you anywhere.

New comment by j4hdufd8 in "Offline card payments should be possible no later than 1 July 2026"

j4hdufd8 — Sat, 04 Oct 2025 10:17:39 +0000

It definitely exists in Amsterdam, no? When I visit I just tap my card/phone on NFC enabled card checking machines (which exist in and out of the stations)

New comment by j4hdufd8 in "AI second brain apps, thoughts?"

j4hdufd8 — Fri, 03 Oct 2025 08:50:53 +0000

Train your own brain first. Or good luck with dementia

New comment by j4hdufd8 in "Sora 2"

j4hdufd8 — Tue, 30 Sep 2025 19:18:38 +0000

Nice! I enjoyed this sub thread. I'm not sure what I conclude but I enjoyed thinking about this.

New comment by j4hdufd8 in "Sora 2"

j4hdufd8 — Tue, 30 Sep 2025 18:01:24 +0000

Challenging the value of AI generated "art"

New comment by j4hdufd8 in "Sora 2"

j4hdufd8 — Tue, 30 Sep 2025 17:40:20 +0000

What are the benefits of those videos?

New comment by j4hdufd8 in "WTF is up with everything using Android?"

j4hdufd8 — Sun, 28 Sep 2025 10:22:28 +0000

I do exactly the same!

New comment by j4hdufd8 in "WTF is up with everything using Android?"

j4hdufd8 — Fri, 26 Sep 2025 11:32:31 +0000

Android is a Linux distribution. 100% you can absolutely build C/C++ binaries that you run directly like fairly regular Linux programs.

Executables, daemons, CLI, sockets, whatever you want. Rust no problem. I have even run Python and Node.js

New comment by j4hdufd8 in "I Spent Three Nights Solving Listen Labs Berghain Challenge (and Got #16)"

j4hdufd8 — Wed, 24 Sep 2025 13:24:52 +0000

What are you implying about people that go to Berghain?

New comment by j4hdufd8 in "Show HN: AirPosture – AirPods as Posture Coach"

j4hdufd8 — Sun, 21 Sep 2025 19:57:14 +0000

This is very cool

New comment by j4hdufd8 in "AI was supposed to help juniors shine. Why does it mostly make seniors stronger?"

j4hdufd8 — Sun, 21 Sep 2025 15:37:40 +0000

> AI was supposed to help juniors shine

No, I don't think that was ever any kind of goal set by anyone ever

New comment by j4hdufd8 in "Introduction to GrapheneOS"

j4hdufd8 — Thu, 18 Sep 2025 15:37:07 +0000

I appreciate the clarification, thank you :) I'm glad we're on the same page. Always curious to learn new details from others, hence my insistence heh

New comment by j4hdufd8 in "Introduction to GrapheneOS"

j4hdufd8 — Tue, 16 Sep 2025 10:47:35 +0000

I was purely focusing on whether or not it uses eFuses, literally, which it 100% absolutely does. I was not making any other such claims.

Indeed it may be true today that "restoring stock firmware and relocking the bootloader will give you a normal Pixel", I completely understand what you mean.

But that is NOT the same thing as "Pixels do not have eFuses to flag devices that have been modified before". Please share data supporting this claim if you have it.

It is possible that existing Pixels have such eFuses that internally flag your device (perhaps bubbling up to the Google Play Integrity APIs) but they don't kill device features per Google's good will.

My question is 100% about the hardware inside the Titan M2 and how it is used by Google. I don't think the answer is public, and anyone who has reverse engineered it to such detail won't share the answer either.

New comment by j4hdufd8 in "Introduction to GrapheneOS"

j4hdufd8 — Mon, 15 Sep 2025 15:55:27 +0000

The Pixel 6 is mentioned specifically about eFuses which is the technical detail that caught my attention in this thread.

> The Xbox 360, Nintendo Switch, Pixel 6 and Samsung Galaxy S22 are known for using eFuses this way.[8]

Anti-rollback protection is a security feature, eFuses are hardware primitives that can be used to implement it. Bootloader locking is another security feature that can be implemented with eFuses.

If you have any data denying the use of eFuses in the Pixel 6, please share it, that is what I was interested in this sub-thread. I really did not understand the relevance and the correctness of your comment.

New comment by j4hdufd8 in "Introduction to GrapheneOS"

j4hdufd8 — Mon, 15 Sep 2025 10:25:37 +0000

Where are you getting this information? For what it is worth, Wikipedia mentions the Pixel 6 on the eFuse page https://en.wikipedia.org/wiki/EFuse

Myself I have not reverse engineered the Titan M2 security chip, but surely it uses eFuse or OTP memory for anti rollback protection mechanisms and such.

These are really basic hardware security primitives. I'm curious why you're under the impression Pixels wouldn't use eFuse.