This is probably not the most simple feature request, and I do not know if it has been discussed in length, whether it could be implemented at all, etc. Still think it is worth to mention it as an nice idea.
I don't like to have all my notes on a mobile device which I haul through train-stations, trams and airports or other. The risk of loosing it (compared to loosing my workstation), and it not being 100% certain that nobody can unlock the device ever is simply to disquieting. Couldn't a switch be added to the mobile version of Joplin (e.g. Android) which enables/disables the following feature : do only download / sync any notes with the tag XXX, ignore all other notes, notebooks, etc. ... FOREVER ? In other words make sure that the bulk of my notes does never end up on that device ?
I am doing the same think right now with two separate profiles and import/export, but it's a pain.
Your turn, your comments ?