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Hacking my “smart” toothbrush

kuenzi.dev

161–170 of 311 posts

Re: Hacking my “smart” toothbrush

#161

Earlier quoted context omitted.

Welcome Time Travellers! This is 2023 where you can find yourself locked out of your toothbrush after too many failed password attempts.

How long's it going to be before "smart" toothbrushes become the only option? Should I start stockpiling "dumb" toothbrushes now while I still can? The other day I was trying to buy a pair of bathroom scales and it took me far too long to find one that just, you know, weighed things without also demanding I connect it to the Wi-Fi and download a smartphone app. How is this an improvement?

We just need to convince normies to stop buying every stupid gadget

... so yeah, we're doomed

Re: Hacking my “smart” toothbrush

#162
post #127

Earlier quoted context omitted.

I have a third party brush head for my Philips Sonicare with none of the smart features and no electronics in the head (there's an air gap where they usually are) and it still works fine. This makes me wonder all the more why they put the effort in to secure the head.

There's a good conspiracy here somewhere.

Something kinda like this:

https://youtu.be/jmzJXVEnmKc

Re: Hacking my “smart” toothbrush

#164

Earlier quoted context omitted.

Welcome Time Travellers! This is 2023 where you can find yourself locked out of your toothbrush after too many failed password attempts.

How long's it going to be before "smart" toothbrushes become the only option? Should I start stockpiling "dumb" toothbrushes now while I still can? The other day I was trying to buy a pair of bathroom scales and it took me far too long to find one that just, you know, weighed things without also demanding I connect it to the Wi-Fi and download a smartphone app. How is this an improvement?

I have one similar to this: https://www.medshop.com.au/products/seca-750-flat-scale-mech...

Re: Hacking my “smart” toothbrush

#165
post #140
post #4

Great article, the most interesting part of which is that you can lock your self out of your toothbrush head after three wrong password attempts. I didn't dig into the data sheet for the NFC chip very deeply, but I imagine that it's just the default that the chip ships with. Or maybe Philips really wants that $25 for a new toothbrush head. :-) EDIT: nope, not the default. From the data sheet, last sentence: "To preve…

Wouldn't this open them to an DoS attack? Set your flipper to fire off bad password attempts at the store and now the entire aisle of toothbrush heads are silently disabled.

It’s 5-something in the morning and I can’t stop laughing at the mental image of some guy cackling maniacally in the toiletry aisle while DoSing toothbrushes.

The absolute personification of Chaotic Neutral

Re: Hacking my “smart” toothbrush

#167
post #4

Great article, the most interesting part of which is that you can lock your self out of your toothbrush head after three wrong password attempts. I didn't dig into the data sheet for the NFC chip very deeply, but I imagine that it's just the default that the chip ships with. Or maybe Philips really wants that $25 for a new toothbrush head. :-) EDIT: nope, not the default. From the data sheet, last sentence: "To preve…

Maybe time to boycott Philips for their woke enforcing of 3-month toothbrush replacement, and closed-source toothbrushes!

(just kidding)

Re: Hacking my “smart” toothbrush

#168

Earlier quoted context omitted.

It works /right now/. Revisit this comment in 3-5 years and see if the behavior of new brushes and brush heads has changed for the worse...

It can’t be far off that they ship a BLE or Wifi enabled Sonicare that reports your best brushing habits to the app that then posts it on Facebook for philipPoints you compete with your friends on… oh shit… what have I done!? Anyhow, blocking unofficial heads is just an OTA firmware update away.

There are no "OTA firmware updates" for Sonicare toothbrushes. There are no other firmware updates either.

Re: Hacking my “smart” toothbrush

#169

Earlier quoted context omitted.

Welcome Time Travellers! This is 2023 where you can find yourself locked out of your toothbrush after too many failed password attempts.

How long's it going to be before "smart" toothbrushes become the only option? Should I start stockpiling "dumb" toothbrushes now while I still can? The other day I was trying to buy a pair of bathroom scales and it took me far too long to find one that just, you know, weighed things without also demanding I connect it to the Wi-Fi and download a smartphone app. How is this an improvement?

A lot of bathroom scales are too "smart" and display recent cached weights rather than real measurements each time, in order to appear more consistent. Accuracy on some is also very bad if you store scales vertically (e.g. propped against wall) as that requires step-on, step-off re-calibration which people forget to do.

I'm not sure you can even buy "just works" dumb mechanical scales any more.

Re: Hacking my “smart” toothbrush

#170
post #129
post #4

Great article, the most interesting part of which is that you can lock your self out of your toothbrush head after three wrong password attempts. I didn't dig into the data sheet for the NFC chip very deeply, but I imagine that it's just the default that the chip ships with. Or maybe Philips really wants that $25 for a new toothbrush head. :-) EDIT: nope, not the default. From the data sheet, last sentence: "To preve…

But what happens after you've been locked out? Can you still brush your teeth with the toothbrush?

It will switch to tooth breaker mode.

https://www.reddit.com/r/UnusualVideos/comments/13uv1ym/forr...

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