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Disney scanner identifies gadgets by their electromagnetic field
If someone placed your naked smartphone on a table alongside two identical models, how would you determine which one is yours? If you're an engineer at Disney Research, you would pull out a little scanner and immediately pinpoint the handset based on the noise it emits. It definitely sounds a little futuristic, but a team of researchers at Disney's innovation labs found that every single piece of technology has its own unique electromagnetic signal, even if they're exactly the same make and model, and built a radio scanner to read them.
