Unique system identifier

My company is developing a licensing system that requires the generation of a unique system identifier. This would be used, for example, to restrict an application to run only on a particular machine.

We already have a native library that generates these system IDs, but we want to implement a Java version. Anyone have any tips on implementing this?

[363 byte] By [anonymousfua] at [2007-11-27 11:44:25]