CI Name

I have a question about how people are using the CI Name. If we use the scanning feature in SDP, then the CI name is populated with the machine name + domain name. However, the machine name could be the same for different workstations as they are replaced or upgraded. For instance, we use the userid+workstation type as our machine name (ex. johndoenb). If John Doe gets a new notebook, the new notebook will have the same machine name as the old notebook. I'm just wondering what is the best practice as far as assigning ci names. I would think you would want it unique in order to track the asset from purchase through disposal.

Thanks

Steve