Abstract: Due to its safety and convenience,online signature verification is especially useful for banking and financial system and personal identification．So the basis of online signature verification data collection of handwriting is very important for followed verification’s accuracy．STM32F103C8，touch screen and touch panel controller TSC2046 and SD card are used to collect and save three-dimensional data of handwriting including stress information．The experimental results show that,the design of the online signature data acquisition and transmission system for high precision,stability and reliability,strong anti interference ability,has the very good identification effect.

Key words: touch screen, on-line signature verification, SD card, data collection