Aeronix used Linux to build a $99 instant messenger appliance aimed at kids. Naturally, hackers soon took an interest in expanding the device’s functionality. The Zipit includes an 802.11b/g WiFi radio, 16-color greyscale LCD with QVGA (320×240) resolution, and a thumb keyboard with rubber buttons. It’s based on a 90MHz ARM720T-based Cirrus embedded processor, running a 2.4.21 Linux kernel. This detailed device profile of Aeronix’s Zipit showcases several Zipit hacks, and offers device vendors advice on how to sell more units.