Mixers and privacy

[Jet Cash]

I understand that Canada is now asking people to declare any transactions they have sent to mixers, and this prompted me to look at a couple of mixer videos. One that I watched stated that you should enter your account identity, and that this would ensure that you didn't have your old coins returned to you. Well it may be that you don't need to enter any personal details to use the mixer, but surely the fact that they are keeping a record of the coins you sent means that it will be possible to track your activities. Have I misunderstood the system?

[TryNinja]

Not all mixers use this “unique code” to avoid receiving their old coins. But for those who do, that’s the explanation I got from BestMixer from when I asked them about this specific functionality they use.

And how does the code thing works? How can you link someone's mixed coins to a code (to avoid receiving the same coins and to give special discounts to 'loyal users') and ensure anonymity at the same time?

It's very simple. We mark each address in our pool (only the address, but not binding to the visitor of the website) with a unique key, that does not allow anybody to get the same coins back when re-use BestMixer service.

Of course there is no way of knowing if all the other mixers function this way, but due to their anonymous nature, I assume they do something similar (unless they are a honey pot).

[g-uid]

Not all mixers use this “unique code” to avoid receiving their old coins. But for those who do, that’s the explanation I got from BestMixer from when I asked them about this specific functionality they use.

And how does the code thing works? How can you link someone's mixed coins to a code (to avoid receiving the same coins and to give special discounts to 'loyal users') and ensure anonymity at the same time?

It's very simple. We mark each address in our pool (only the address, but not binding to the visitor of the website) with a unique key, that does not allow anybody to get the same coins back when re-use BestMixer service.

Of course there is no way of knowing if all the other mixers function this way, but due to their anonymous nature, I assume they do something similar (unless they are a honey pot).

Slightly tangential but still on point, how to rank the effectiveness of these mixers? Has anyone had any bad experiences with them, i.e., where the coins were in fact demonstrably linked to their source by another external third party?