Visibility of internal archives.

Assuming that you are reading the file from File.DirAssets then the file is packaged inside the APK file and cannot be read on unrooted devices. Rooted devices will allow the user to get the APK file and unzip it.

Unrooted devices can also easily obtain the apk with an application backup program such as AppMonster or one of several others on the Market.

I'm not very sure what both of you mean as "rooted" and "unrooted" but think that could be the user's permission to access some files like in Linux. In this sense, I think Android is a Linux implementation/mobile version..

Because it seems to be nothing impossible in the endless world of trying to avoid copy, inverse engineering, etc, I have thought that using encrypting/decrypting code for a .txt could be a good idea. What do you think about?

Thanks you.