Hello Steve, I use Dongles in a few applications: http://www.marx.com/en/ not expencieve and very safe. Some people dont like these things, so you loose customars unless your product is free of concurency. Same for all other security of course.
I also have some applications where customar name and address is in the forms, or / and report printing. Pretty safe, just do a CRC check on the strings. If program is copied the everyone can see it is stolen, so it is pretty safe. I have somewhere code to read the CPU serial. But some computers can switch that off in Bios. Other approach is MAC address of network card. These 2 latter are not so safe of course, but if a customar phone you every month he has changed his network card then you can be pretty sure he is not honesd :) --- Rgds, Wilfried http://www.mestdagh.biz _______________________________________________ Delphi mailing list -> [email protected] http://www.elists.org/mailman/listinfo/delphi

