To set up password protection, go to Options > Preferences > Fitting Session > Fitting, check the box beside Enable password-protected fittings, and enter the password you wish to use. Every time you save a fitting to hearing instruments with this option selected, the fitting information cannot be read back from the hearing instrument unless the correct password is in the software. Passwords are case sensitive and you have unlimited tries (in case you have deleted the password from your computer and need to input the same one again).