MODE=0022 sounds like user perms are different from group and other.

0022 in octal perms corresponds to u=rwx, g=rx, o=rx.

I don’t know if udev “MODE” is the relevant thing here but you could try 0002 so the user part and group part are the same.

Do you mean you want to put the resulting image files into a particular folder on your computer?

I would have thought anything to do with folders and stuff is up to your scanning software, not the scanning device.

Is it possible for a game to read two mice separately? Sure. It’s not common, but it’s possible.

The game “Lemmings” was ported everywhere in the early 1990s, but the original Amiga version supported two mice at the same time (two mice, two players, two cursors).

That’s a rare example of a game that designed in some support for two mice, and that support was specific to one platform.