This is a real issue. For all of 2017 I had to deal with a stalker— couldn’t go to most tech events because so many people were taking photos of attendees, and I couldn’t risk that Consider having a policy that requires permission to take photos/video at your eventhttps://twitter.com/Tybawai/status/1020820141997772805 …
Do this, but be sure it can't be weaponized against people documenting abusive behavior - same way the prohibition on publishing private communication needs exceptions.