Protecting an assembly from being used elsewhere?

[John Dalberg]

I am developing an app for a web hosting hosting company and placed in
sites folders. The app will be used by the sites and accessible to
webmasters using ftp.

What options do I have to protect the app from being copied and used
elsewhere?

J. Dalberg

 

[Steven]

Check out .net's licensing model. there are some example articles on the
msdn