IBM Keyboard Optimizer - Manual (Page 5)

is recommended, the Keyboard Optimizer will explicitly offer that suggestion, and you
can decide what to do.
Logging
If you have a reproducible problem with the program, you can record your session to help
with troubleshooting. The log file records information about your typing but DOES NOT
contain the exact text you typed. All alphabetic characters are recorded as the character
'x', and all numerals are recorded as '1'. No-one could obtain passwords or read what you
have typed by using this logging feature.
For the latest information
Go to: www.research.ibm.com/KeyboardOptimizer.