need antivirus software that scans all files before they are opened/executed/copied/moved also need this in a way to require very minimal computer resources for the end user
the design of the application itself is very important and must be very simple and easy to use. we like cool designs with very nice and cool buttons and animations.
functionality is just as important, it must be easy to use and very easy for people to install
serious bidders only, show me some demos or examples so i know you can do this.