This DIY Linux-Powered Business Card With USB Port Costs Just $3

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George Hilliard, an embedded systems engineer by profession, decided to make a barebones Linux board in a business card form factor. It is a complete, minimal ARM computer that runs customized Linux firmware built with Buildroot. This Linux-powered business card has a USB port in the corner. Hilliard says that the card takes about 6 seconds to boot after plugging into a computer. It shows up over USB as a flash drive and a virtual serial port that can be used to log into the card’s shell.

[Source: Fossbytes]