if they switch to an Equifax ID, then you'll have to submit an Equifax ID when applying for a loan and a fraudster could do the same they do today.

If you switch to dozens up separate IDs, the entire system will get bogged down as everyone forgets all their ID #s

I think the bigger point is that companies like Equifax shouldn't be using ID numbers at all in the way that they rely on them. They use SSNs as a database ID crutch to keep from having to do the actual leg work of talking to people, verifying/reverifying the accuracy their data, and basically doing the job people pay them to do.

Others on this thread have suggested that storing information that can cause me to incur a liability should require insurance against such a damage. I'm confident that with the right incentives in place, commerce will proceed without getting bogged down.