TSReader文件阅读器是专门针对TSP文件锁研发的阅读工具，TSP文件锁是外发文档的制作工具。只有使用TSReader阅读器才可以浏览TSP文件，否则无法打开已加密的TSP文件。
　　TSReader文件阅读器可显示文件阅读限制条件，方便用户查看当前可阅读次数和文档过期时间。(TSReader is a transport stream analyzer, decoder, recorder and stream manipulator for MPEG-2 systems. It supports DVB, ATSC, ISDB, and Digicipher II extensions to the base MPEG-2 specification. TSReader gives the user the "big picture" overview of what's being carried inside MPEG-2 transport streams and can be very useful for finding errors or inefficiencies. TSReader comes in three different editions - Lite, Standard and Professional. The Lite edition is free, but it is also the one with the least number of features.)