Microsoft's Follow-Up To Viral Age-Guessing Tool: A Twin Detector

"Twins or Not?" tells you how similar two photos look.

A Microsoft website called "How Old Do I Look?" went viral last month, mostly because its attempts to guess peoples' ages from photographs was sometimes so wildly off base that people immediately began sharing their hilarious results (as well as results from uploaded pics of celebrities, animated characters, and inanimate objects). Now, a Microsoft developer has released another tool, based on the same machine-learning algorithms, that rates how similar or different any two people look.

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