Anonymous = name not known, roughly speaking.

Nominally, its antonym would be nonymous, not onymous.

The rest of the article is fine. Basic idea: Use Tinder pic for Google image search, find person.

Real gist: Anonymity is tricky to maintain if people know your face.

What's the problem with onymous? It's in all main dictionaries - nonymous is not (besides UD). Sure, it might not make sense looking at the Latin origin, but that's how language evolves.

In fact, I've just learned something: My Greek etymology was all wrong, onymous is correct, nonymous is nonsense.

I'd taken the "a" as the "not" (as in "atom"), when in fact the word being negated is "onoma", meaning "having a name".

I'd snarked early and ignorantly, thanks for pointing out my error.

Now imagine Tinder users having access to FB-quality face recognition software? I can see GOOG offering that feature as part of their image search in the not-so-distant future.

Isn't the point of Tinder to use your real identity?