A Tender, or a number of Tenders, can be linked to a scan code for the use of same value vouchers.
This would be used when you are giving out prizes each week for the same value, or set of vouchers that would be used in a future promotion.
You can add the scan code for Tenders by going to Back Office > Setup > Tender Types > Modify the Tender Type you wish > Scan Code > Enter scan code.