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Hacking my “smart” toothbrush

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Re: Hacking my “smart” toothbrush

#121

Post by [deleted] »

quijoteuniv wrote: post #76
mikestew wrote: 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…

I guess the shortage of chips did not affect the toothbrush industry.

[deleted]

Re: Hacking my “smart” toothbrush

#122

Post by devoutsalsa »

mikestew wrote: 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…

Lock Picking Lawyer: “this will be my first attempt to toothpick a lock. Using the tool that Flossnian Bill and I made…”

Re: Hacking my “smart” toothbrush

#123

Post by Raqbit »

A few years ago I reverse engineered my Oral-B (Braun) toothbrush in order to change the color of the brush (handle) to one of my liking, without being constrained by the pre-set colors available in smartphone app. (Which I think now also requires you to log in)

Turned it into a Go library: https://github.com/raqbit/goralb

Re: Hacking my “smart” toothbrush

#124

Post by rjh29 »

jackvalentine wrote: post #87
arrowsmith wrote: post #82

Earlier quoted context omitted.

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?

> 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? First site I went to, first search term I tried. https://www.target.com/s?searchTerm=scales

Also the first results on Amazon UK...

Re: Hacking my “smart” toothbrush

#125

Post by herrherrmann »

Raqbit wrote: post #123

A few years ago I reverse engineered my Oral-B (Braun) toothbrush in order to change the color of the brush (handle) to one of my liking, without being constrained by the pre-set colors available in smartphone app. (Which I think now also requires you to log in) Turned it into a Go library: https://github.com/raqbit/goralb

“Goral-B” – Well done.

Re: Hacking my “smart” toothbrush

#126

Post by beefield »

arrowsmith wrote: post #82
qingcharles wrote: post #44

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?

My pet peeve with bathroom scales is that it is impossible to find one that actually does what it claims and has accuracy of +-0.1kg. They do show the measurement to 0.1, but just shifting your weight differently can cause a difference of hundreds of grams. Does anyone knlw a scale that actually measures at 0.1kg accuracy?

Re: Hacking my “smart” toothbrush

#127

Post by Voklen »

PietdeVries wrote: post #110
aceazzameen wrote: post #52

Earlier quoted context omitted.

Guess we'll have to brute force clean our teeth by moving the locked toothbrush up and down, side to side, and in circular motions.

I might have misinterpreted the article, but I imagine that if the NFC tag on the brush locks out, the handset is no longer able to write new data to it (no 'brush seconds' can be added to the counter). This suggests to me that the handset will not start blinking and reminding you that you need a new brush, but will be happy to brush to infinity. I cannot imagine that the handset will refuse to brush if it can't writ…

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.

Re: Hacking my “smart” toothbrush

#128

Post by GoToRO »

Some facts:

The tag is used to change the cleaning mode of the toothbrush automatically, to match the type of head you inserted. This makes very easy to change heads durring the same session.

It is also used to register how long you used that head. A warning is shown when the head should be replaced. After a few warnings you will no longer get them, just the led to replace the head remains on. You can continue to brush your teeth without any problems. What I've found is that the warning comes at the right time, you really feel a decrease in cleaning efficiency around that time.

You can use heads without the cip and they work. You just have to select the proper mode from the handle manually. Or not.

The early versions have a defect where when you push to insert the head, you also push to open the handle. With time, water will get in and the toothbrush will stop working. Not sure about the latest versions.

Re: Hacking my “smart” toothbrush

#129

Post by Tepix »

mikestew wrote: 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?

Re: Hacking my “smart” toothbrush

#130

Post by criddell »

beefield wrote: post #126
arrowsmith wrote: post #82

Earlier quoted context omitted.

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?

My pet peeve with bathroom scales is that it is impossible to find one that actually does what it claims and has accuracy of +-0.1kg. They do show the measurement to 0.1, but just shifting your weight differently can cause a difference of hundreds of grams. Does anyone knlw a scale that actually measures at 0.1kg accuracy?

The best scale I’ve ever had was the Nintendo Wii Balance Board.

A couple of years ago I wanted to upgrade my bathroom scale to whatever the best one was and I found that there are no really good scales out there.

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