MelFish This import functionality is bases on Microsoft technology called WIA: https://learn.microsoft.com/en-us/windows/win32/wia/-wia-startpage
Mostly it is designed to import files from phones and cameras, but in most cases in also works on regular thumb drives. I guess, Windows has some functionality that checks content of the newly added storage and decide, can it be considered photo device or not, and based on that, WIA will see it or not.
Unfortunately, I have no control on what Windows considers image device. My guess it expects to see there some specific folders like DCIM or something like that. And if it will see it, it will behave as it is photo camera, and then Tonfotos will be able to detect its insertion and make import from it.
Alternative approach is to just temporarily add this card to Tonfotos Library, let it index its content, and then import Photos using this function: https://community.tonfotos.com/d/175-version-143-simplification-of-copying-files-to-archive When using this function, files will only be indexed once.
