> buy a card with a UUID from anywhere that sells alcohol/tobacco that is valid for some period of time. most people are comfortable with flashing their ID at the clerk. the UUID card is non-identifying.

This could be a good system if it's set up right. There's still some risk of being tracked if it isn't though. IDs could be linked to the cards at the time of purchase if retailers scan the drivers license, then scan the card creating a record that card #XXXXX was purchased using driver's license # XXXXX

Even if retailers aren't scanning the drivers licenses and collecting data that way, the cards and codes on those cards can be tracked and traceable to a retailer. That's how things like calling cards have been tracked. Say for example someone uses the code on a card to access a website, the police can match the code that was used to the serial number of the card, look up which retailer that card was sold at, and can then access security camera footage at that retailer to identify who bought the card from that location. This would also let them passively generate lists of IP addresses/device IDs matched to websites and specific retail locations over time.