I would like to have the option to encrypt and protect with a password the licence keys and connection settings stored by RUT - Viewer.
I think this is something better done by the applications specifically made for the purpose of encrypting discs (and removable discs for that matter). Here is a good article
on the subject.
In other words, it's much better and safer to encrypt the entire USB-Drive than building encryption capabilities into RUT-Viewer.
A USB stick is easily lost or stolen...
Absolutely. I always encrypt (and backup) all my drives including removable ones. Better safe than sorry. :)
A word of warning to you and everyone using the portable RUT-Viewer version:
RUT-Viewer allows to save passwords and copy licenses out of the License Storage. We bear no responsibility for any damage suffered by a user through the use of a non-encrypted drive. We strongly recommend encrypting your removable drives and even your laptop drives as this is a common practice nowadays.
Thank you for highlighting this issue. It will be useful for others to know. We'll also add information about the necessity of having your drives encrypted on the RUT-Viewer Portable download page.