MadSaxon writes "gumstix.org has a brief but titillating description of a very small Linux machine based on the PXA255: 20 x 80 mm, '64MB SDRAM, 4MB Flash, MMC/SD/SDIO slot, and power management. It takes 3.6V - 5.0V power, and has been drawing under 200 mA.' It weighs less than 12g sans battery, and 'can fit in a collar undetected.' Is collar-top computing the Next Big Thing?"
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