I need to generate a unique code from a single PC, my software will be distribute by licence, and locally I need to identify the environment and send this code to the server. I don't want to mantain on the server a sequencial number and each client recieve a number of the sequence, i tried to read the MAC adress from NetworkInterfaces, but is not secure, the user can change easily the MAC adress. The best way I think if its possible to read the motherboard serial number, but I haven't found the way until now. Any sugestion?
How much is your software worth ?
Does the target market pirate software a lot ?
Motherboard serial number reading is possible on Windows boxes using WMI
Use WMI to read serial number http://www.c-sharpcorner.com/UploadFile/GemingLeader/mb-sn-wmi08242009101325AM/mb-sn-wmi.aspx
Use WMI from Java http://henryranch.net/software/jwmi-query-windows-wmi-from-java/
WMI is/was a broken on Windows XP domain members on a AD Domain, if they use group policies.
( This only effects most corporate users of XP, so not a big deal)
Hope this helps a bit ( MAC address is simpler... but is easy to change)
The MAC address is not reliable. You should aim for something that cannot be change such a CPU ID or HDD IDE ID. Here is want I mean: http://www.soft.tahionic.com/download-hdd_id/index.html
Unfortunately I don't think that DLL is working with Java, but at least it will show you some info about what is reliable and what is not.
来源：https://stackoverflow.com/questions/3597237/unique-computer-id-hardware-based-in-java