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Re:Amazon launches Part Finder, using technology acquired fr... by inferiorhuman on Friday September 14, 2018 @11:27PM (#17992833)
In theory if you've got distance information and can keep the phone at a known angle in relation to the item differentiating between 27 and 29 mm shouldn't be an issue.

What the photo bits will not be able to do without significant user interaction is determine other key properties of the fastener including material strength and likely finish. It's a cute gimmick though.

Re:Amazon launches Part Finder, using technology acquired fr... by craftyguy on Saturday September 15, 2018 @01:59AM (#17993196)
> determine other key properties of the fastener including material strength

Given a random screw, can anyone determine material strength using household items? If so, I would definitely like to apply this to some personal projects I am working on!

Re:Amazon launches Part Finder, using technology acquired fr... by inferiorhuman on Saturday September 15, 2018 @10:46PM (#17997060)
> Given a random screw, can anyone determine material strength using household items? If so, I would definitely like to apply this to some personal projects I am working on!

Yes. Fasteners are typically marked on the head/face.