>In the US, we have social security numbers. Is it true that Canada uses driver's license numbers for unique ID numbers? If so, how long/what format is this number?
Social Security Number cannot be guaranteed to be unique. According to the US government, there are 30,000-40,000 duplicates. There were two people I went to college with that had the same SSN. Caused all kinds of problems.
Craig Berntson
MCSD, Microsoft .Net MVP, Grape City Community Influencer