The two men pictured in this photo are named Will and William West, and they look like identical twins. Apparently, they looked so similar that a clerk thought that they’d seen Will before when he first walked into the police station despite that being his first time there. He was arrested in 1903, and at that time, William was already in prison. However, from the photo of the two side by side, you can see why the clerk might’ve been a bit confused.
There were some false claims that this case led to the adoption of taking fingerprints; however, that had already started a couple of decades before, and it wasn’t really related to this specific case.