Is that a USB key in your pocket or a dual-core computer? Today, Norwegian company FXI technologies showed off a USB stick-sized portable computer prototype, complete with a dual-core 1.2-GHz Samsung Exynos ARM CPU (same as in the Galaxy S II), 802.11n Wi-Fi, Bluetooth, HDMI-out and a microSD card slot for memory. Codenamed Cotton Candy because its 21 gram weight is the same as a bag of the confection, the tiny PC enables what its inventor calls “Any Screen Computing,†the ability to turn any TV, laptop, phone, tablet, or set-top box into a dumb terminal for its Android operating system.