Thanks Mark. > reply 1) Yes, you can broadcast a UDP request and make all copies on > the network send (part of) their serial number to compare them with > the serial number of the newly opened copy of your application.
Did you know if exists some example stack around, to perform and answer to an UDP request? > reply 2) Yes, you can use USER$ on some platforms, but not all. You > can also use MAC address, label of the hard disk, IP address and > other characteristics. However, I will never buy software that > requires me to provide information like this, because I know it will > be a hassle to install the software on a new machine. Besides, there > is a hack for each protection measure which makes it difficult to > decide how much to invest in protection. I thought that $USER should be valid because: 1) a license is valid, in effect, only for one user (think about a corporate with hundred of stations that buy a copy of your app). 2) For a single user with 2 computers, in most of the cases he will have the same account user name on both, and you can also add a button in your site to automatically furnish a new code to a registered user. I don't think to invest very much in protection, but a simple - universal - license code, will put too easily your app in the pirates market. Regards, Paul Claude ZiggySoft Software http://www.ziggy-soft.com/ [EMAIL PROTECTED] ------------------------------------------ _______________________________________________ use-revolution mailing list use-revolution@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution