CTI provides Huatest handwritten signature system services related to electronic identity authentication and software testing. The Huatest handwritten signature system collects confirmation information in real time and combines trusted electronic signatures and authoritative time sources, which not only realizes the dynamic extraction of electronic information of terminal customer confirmation behaviors, but also At the same time, it can provide an accurate basis for defining the time when the business takes place, comply with the reliable electronic signature specification, and finally form a valid electronic certificate recognized by the law