When is an Altoids tin not just an Altoids tin? When it’s called MintyBoost and can charge your iPhone 4 as well as any other USB device. You can order your very own kit here for $19.50. Video after the break.
What they found, and what’s enumerated in detail in the video below, is that Apple puts unusual resistor values on USB data and power lines. The result is a sort of DRM for hardware, that explains why third-party battery chargers don’t always work the way they should.
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