ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,430,520, issued on Sept. 30, was assigned to SHENZHEN ZOLON TECHNOLOGY Co. LTD. (Shenzhen, China).

"Method for testing POS machine, test terminal and non-transitory computer readable storage medium" was invented by Jiansheng Fu (Guangdong, China), Shaolin Wang (Guangdong, China), Changshen Lin (Guangdong, China) and Songhe Wang (Guangdong, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for testing a POS machine is applied to the test terminal and includes: obtaining sample data of a magnetic track; outputting a first test level according to the sample data of the magnetic track and generating a magnetic field that varies over time accord...