Filesystems and case-insensitivity

I worked with a system that had filenames of the form <space><backspace>NNNN

Bearing in mind users weren't supposed to go anywhere near them, it was a pretty good way of stopping people scanning the filesystem and messing about with them. I agree for user visible files, it's a good idea, but not all files are meant to be user visible and some of them can't be hidden.

Cheers,
Wol