Save Keys Undetectable - Version 6.2 Save Keys Undetectable 6.2 is an invisible key recorder that secretly logs every key typed into the keyboard. Other information such as window titles, program names and paths, and clipboard text can also be recorded. This new version has improved encryption for faster encoding/decoding of the log file. At the time of release on the first of January, 2005, no known anti-spyware or anti-keylogger was able to detect Save Keys Undetectable 6.2.