Hi---I wonder if someone could recommend an app to provide security for files on an SD card---without encrypting them all, which takes a long time and makes using the card in the device cumbersome.

On my external hard drive, when I travel I use a program that just encrypts the file system--you can't see what it has, let alone access anything it has. That would be the type of thing that would be more useful---or maybe something like password protecting particular folders.

Any ideas?