The published ANSI standard calls for a threetrack format,with recording done seriallybybit on each track. Using a highdensity magnetic stripe as its memory, powered by the reading unit or an internal battery, it could acquire a variety of data from remote sources, identify itself upon request, and encrypt its own data for transmission.; 一种公布的ANSI要求三磁道格式的标准,每个磁道串行逐位进行记录。由读设备供电或内部电池供电,能从远程资源中获得各种数据,根据请 求识别自己,可将自己的数据加密再发送。