a numeric or alphabetical code that is used to "Confirm" something in a transaction. To assure that the transaction has been completed or will be in the process of completion. Example: order a cell phone online, when it is being shipped through ups you will get a tracking number or reference number or confirmation number, so that you can be assured of the best delivery or accurate transaction.
This is a code that enables one to confirm that the account is actually yours. This is normally sent to your email address after you have difficulties in accessing your social account. Know more about this code on http://www.blurtit.com/q8959647.html.