here, you may create your own screen saver and providing keylock feature or somekind of license..so other user won't use it unless you give him/her your license..
simple word, your screen saver could be a trial version and to activate it the user must get the license from you.you may earn somecash from here..
download the software HERE
it is not a direct download link.just browse a couple of pages
unfortunately this software isn't free.it is worth $800..so damn expensive..just chill my buddy, you may still get 10 days trial version.in that time you can create ur own SV..
just try it...it's free and profitable!
