iqtouch versus. In the 1970s, the US military first applied Touch Panel technology to military applications. Since then, the technology has gradually migrated to civilian use. With the development of network technology and the popularization of Internet applications, a new generation of touch technologies and products have been introduced. Appeared, its ruggedness, fast response, space saving, easy communication and many other advantages have been recognized by the public. At present, this easiest human-computer interaction technology has been pushed into many fields. Except for personal portable information products (such as PC , PDA , AV, etc. using handwriting input technology ), the application fields are used in information appliances and public information. (Such as e-government, bank, hospital, power, etc. business inquiries), electronic games, communication equipment, office automation equipment, information collection equipment and industrial equipment, etc.