Using encrypted usb stick with remote

Hi and many thanks for your help earlier. Sorry I have been working flat out on other stuff and have not looked at this again until now. In fact I have lost my thread of thought on Nitrokey and want to go back to your suggestion. Will try now and get back to you if I may please when I get stuck!!! Is this OK with you?
Regards,

It’s fine β€” give us a shout when you can