Engadget Daily: 3D motion capture, the tough reality of sapphire displays and more!

Today, we take a look at the history behind 3D motion capture animations, scratch-test a nearly indestructible sapphire display, watch iOS users join the AR war of Ingress and learn about a $20 chip that detects diabetes. Read on for Engadget's news highlights from the last 24 hours.

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