If an institution has updated their barcodes, Ebook Central must be advised so we can add or update the new barcodes or methodology being used by patrons. That can be done by the following:

List of Barcodes

A list of valid barcodes has been uploaded into our authentication database. The users barcode must match exactly as we have it listed.

Pattern Matching

The barcode must march a pattern of characters (such as beginning with a certain alphanumeric prefix, followed by a certain number of digits, so that the entire code is a certain length). The authentication database specifies such a pattern, and the user needs to enter a matching code.

When using barcode patterns, the following needs to be specified:
The allowed characters for the barcode pattern can be as follows:
If barcodes are not entered as specified they will fail.