p Tens of thousands of dating profile pictures were taken from Tinder by a programmer who then made them publicly available on the web.
Stuart Colianni wrote a program to compile the cache of photos, intending to use them for machine learning research.
Tinder accused Mr Colianni of violating its terms of service.
Tech news site TechCrunch reported that the dataset originally contained many thousands of pictures from Tinder users in the Bay Area, around San Francisco in California.
Some users had "multiple" photos scraped from their profiles, TechCrunch added.
He explained that he was looking for a way of gathering more detailed data on human faces, adding, "Why not leverage Tinder to build a better, larger facial dataset?"