It’s not uncommon to feel pangs of regret after a big weekend out — for overindulgences of drinks, dalliances, burritos, or all of the above. Now some hungover bargoers can add “turned over personal information to surveillance companies” to the list. A number of destinations in the Castro, including The Mix Bar, Badlands, and Toad Hall, have been using the third-party security service Patronscan to scan IDs, photograph faces, and store personal information in a shared database, as first reported by Gazetteer SF. (opens in new tab) The extra level of security is meant to give businesses a way to flag problematic patrons and share that information with other bars — a kind of mass joint “86’d” list. However, the technology has concerned community members and privacy organizations. “We advise San Franciscans avoid such bars until they remove the facial recognition technology to ensure safety for the queer and trans community, free from harmful surveillance,” digital rights advocacy group Fight for the Future wrote in a post (opens in new tab) ahead of Pride weekend. The good news is that California’s privacy laws, stronger than those of most states, give you some control over what happens to that information. You can see it, fix it, delete it, and, if you feel you were incorrectly flagged by a bar using the software, dispute it. What they have and where it’s shared Before you go into a bar, look around the security check. Is there a small camera pointed at you or a posted disclosure about a scanning system? If they are using Patronscan or similar technology, you can ask about opting out, but the bar is within its rights to refuse you entry. “It’s a really unfair choice, especially for people in more vulnerable populations,” said Hayley Tsukayama, director of state