Facial recognition is out of control," Lenoir wrote, referring to sex workers who include pictures of their faces in public advertisements.
The tweet went viral and provoked a conversation among sex workers about digital safety.
An American sex worker told me a story of her border interrogation that suggested she was flagged by a computer program.
When I asked, a spokesperson for Customs and Border Protection (CBP) didn't deny that the agency was using facial recognition to identify sex workers.
The woman also described the conversations that sex workers have as they struggle to figure out the limits of digital safety.