Bob Cassette Rewinder: Hacking Detergent DRM

Re:Bob Cassette Rewinder: Hacking Detergent DRM by qwertox on Sunday May 02, 2021 @07:45AM (#27014387)

Dishwasher Detergent DRM?

It would have never come into my mind that this is something that even exists.

What's with the tabs you put into the little chamber, or which I'm just dropping into the cutlery holder since the chamber lid broke of. Aren't they compatible or what?

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For their website:

Is the use of a Bob cassette mandatory? No. However, to ensure optimal washing quality and higher Bob life durability we recommend using the Bob cassette.

Can I refill my Bob cassette myself? No.

We use a highly concentrated detergent formula which is not publicly available for sale.

So we have set up a way to collect used cassettes, clean them and refill them in our factory.

This allows us to offer you an optimal washing quality with a zero waste solution!

Seems fair to me.

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Re:Bob Cassette Rewinder: Hacking Detergent DRM by environment on Sunday May 02, 2021 @07:51AM (#27014432)

>dropping into the cutlery holder

Are you aware that if your dishwasher has a pre wash cycle before the main wash cycle; then your detergent will be wasted. ? A pre wash cycle is common in european dishwashers.

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Re:Bob Cassette Rewinder: Hacking Detergent DRM by qwertox on Sunday May 02, 2021 @08:06AM (#27014542)

Yes, I am aware of this.

Pre-Wash cycle ("Vorspühlen") is an additional button which would need to be in a depressed state for this short cycle to be additionally executed and fully exchange the water, but I never use it. I think the main cycle also does refresh a certain percentage of its water, I'm not sure about it. But just using one tab is not enough.

I buy the cheap ones from Aldi which are € 0.04 a piece. I use the machine 1.5 times a week, so that extra tab is ~ €1.40 a year.

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Re:Bob Cassette Rewinder: Hacking Detergent DRM by sokoloff on Sunday May 02, 2021 @07:52AM (#27014441)

They’re oversized for this dishwasher, meaning they’d likely not fully dissolve and rinse off.

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Re:Bob Cassette Rewinder: Hacking Detergent DRM by qwertox on Sunday May 02, 2021 @08:36AM (#27014742)

I agree. I didn't read the article after the fact.

But what a great article it is. All the details are in there.

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Re:Bob Cassette Rewinder: Hacking Detergent DRM by fomine3 on Sunday May 02, 2021 @07:56AM (#27014463)

I wonder should it called DRM or just a EEPROM

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Re:Bob Cassette Rewinder: Hacking Detergent DRM by wizzwizz4 on Sunday May 02, 2021 @10:48AM (#27015749)

Well, it's Digital Restrictions Management, so both.

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