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cebert • today at 8:48 PM • 10 replies • view on HN

I can’t wait till somebody figures out how to reverse engineer these with a LLM so we can just sync the scale data ourselves. I purchased one of these devices, but I am somewhat regretting my decision now.


Replies

thway15269037 • today at 9:34 PM

I can't help but feel that something soon gonna break, and break big. Like, the decompilation stuff either gonna get criminalized, or forbidden in training, or I don't know. Current state of affairs became super imbalanced, where I can decompile 400k+ lines big game in a weekend and rip it's engine; or, as pointed in sister thread, as someone cloned music processor device in 2 hours.

The question is who and when first blinks.

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deivid • today at 10:02 PM

I don't have the scale, but I got the protocol for the watch and it'll probably be similar enough.

Been using my implementation exclusively for months, seems fine.

https://github.com/davidventura/withouthings

tonyedgecombe • today at 8:54 PM

I'm coming to the conclusion that my life is improved the more I can leave these technologies alone.

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mijoharas • today at 8:54 PM

Used to be a thing before LLMs too.

Here is a starting point. It includes a link to instructions on how to reverse engineer a Bluetooth scale[0], and it looks like someone dumped some data already.

[0] https://github.com/oliexdev/openScale/issues/786

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eitally • today at 8:57 PM

I've had pretty good luck using Google Appscript to either access web APIs or screenscrape, then parse into a Google Sheet (which I either use as-is or as the source to populate a web app).

itopaloglu83 • today at 9:29 PM

We need an open firmware for these scales.

I just need a scale that syncs with my phone, and none of those subscriptions.

randomblock1 • today at 9:51 PM

I give it at most a week. People freed the Whoop pretty quickly. I mean, you could probably do it yourself if you have the time and an LLM, it's probably not that locked down.

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toomuchtodo • today at 9:18 PM

Reverse engineer anything with agents, from app behavior down to native binaries - https://news.ycombinator.com/item?id=50058850 - October 2026

https://github.com/morluto/rea

https://rea.tools

k4rli • today at 9:50 PM

Pretty sure it's already possible. I have a small service running on homelab that syncs all the withings data to garmin. Has needed no attention in years and just works.

Analemma_ • today at 9:20 PM

I'm not as optimistic. I think we're in a very small golden window and once companies catch on that reverse engineering is taking off in a big way, they're going to panic and start demanding cryptographically-sealed binaries with remote attestation everywhere. And they'll probably get it, because what the consumer wants barely matters anymore.

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