Amazing solution. I was happy to know about the privacy provided by Smart Mixer but remained a sceptic until I read that they too do not want our personal information for using the service. Now, that is real privacy.
In fact, the smart code to be used as an identifier for the user is a great idea. On the one hand, nobody knows who the user is, but on the other hand, the anonymous user can earn a loyalty bonus if any. Great stuff!
So, I was happy to share it on my twitter. Here it is: