Touch screens have been available for some time and are found in a variety of fixed and portable devices, but it was the launch of Apple’s iPhone that refocused the public’s attention on them as never before. Shipments in 2007 of touch screen-based mobile devices increased 91% over 2006, and ABI Research forecasts that revenue from the global touch screen market for mobile phones and other handheld devices such as MIDs, UMPCs, and PNDs will reach $5 billion in 2009.