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Several gay bars in San Francisco’s Castro district are facing scrutiny over the use of face-scanning ID systems that critics say could allow customers to be tracked across multiple venues. An investigation by reporter Cydney Hayes for the San Francisco Gazetteer found that bars including Mix, Badlands, and Toad Hall use ID-scanning kiosks operated by PatronScan. The systems collect personal information such as names, addresses, genders, and behavioral data inside venues. According to the report, the kiosks share information with a connected network of nearby bars.

This raises concerns that patrons flagged or denied entry at one location could be identified at others. The data is reportedly deleted after 30 days unless a customer exhibits “bad behavior,” in which case it may remain in the database. The issue gained wider attention after a Twitter post on June 10 from Eddie Kim, who wrote: “I went to the Mix in the Castro, and they collected my photo and ID data without me knowing…Turns out, it’s part of a surveillance network, and some worry about a corporation having ‘lists of gay people’ in 2026.”

Privacy advocates say biometric-style identification systems may create unique concerns for LGBTQ+ patrons who value anonymity and could face risks related to outing or harassment.