In article <2758 at laura.UUCP> lengewit at ludger.informatik.uni-dortmund.de (Peter Lengewitz) writes: >Any other solutions to protect software from running on several PC's? Yes, use the kernel serial number. (Try the uname() system call) You can also use the uucp/network node name. (Which of course only works if uucp/network is installed)