Microsoft is now giving people a chance to settle arguments about whether they have a doppelganger once and for all with a new website called “Twins or Not.”

The service, launched Friday, lets people upload a pair of photos to the web and get back a similarity score that ranges from completely unrelated to “OMG, clones!!!” It’s powered by Microsoft’s Project Oxford Face API, which lets developers handle image recognition problems, like determining whether people are related, by using the company’s Azure cloud platform. This is another novel use of Microsoft’s image recognition technology, which the company first put on display with the ”How Old do I Look?” website that it launched at its Build developer conference in late April.

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