The title was somewhat misleading. I expected a finding that two different people might have the same fingerprint.
The actual story is that different fingerprints from the same person are more highly related so that they may be distinguishable from those from another person.
AI can distinguish bones on xray by race.
https://www.nibib.nih.gov/news-events/newsroom/study-finds-artificial-intelligence-can-determine-race-medical-images
For their study, Gichoya and colleagues first wanted to determine if they could develop AI models that could detect race solely from chest x-rays. They used three large datasets that spanned a diverse patient population and found that their models could predict race with high accuracy—a striking finding, as human experts are unable to make such predictions by looking at x-rays. The researchers also found that the AI could determine self-reported race even when the images were highly degraded or cropped to one ninth of the original size, or when the resolution was modified to such an extent that the images were barely recognized as x-rays. The research team subsequently used other non-chest x-ray datasets including mammograms, cervical spine radiographs, and chest computed tomography (CT) scans, and found that the AI could still determine self-reported race, regardless of the type of scan or anatomic location.
As far as I have read, neither the AI nor the researchers have said how the AI makes the ditinction.