You could get an add-in like giveX, or (I think ) Mercury Payment. You're probably not going to get this sort of functionality out of the Voucher system though. Vouchers just want a simple serial number; Credit and Debit Cards want an account number, expiration date, some other stuff and specific leading and trailing characters. You either need an add in that takes control of the (probably OPOS) MSR and gets the appropriate information for each tender type, or you need 2 separate MSRs - one to read the 'standard' CC format and another to read the gift card.
A bar-coded Gift Card is much simpler to read than a Magnertic card...
From: "Andrea" Subject: Integrated Gift Cards Date: Monday, October 03, 2005 5:06 PM
Regarding Gift Cards, Does the software allow for Integrated Gift Card Processing? Meaning- can they gift card be swiped throught the keyboard with a Magstripe reader and have it read the amount on the gift card, or does the client needs to hava a seperate machine for this transaction? My potential client wants this to be integrated with the software- is this possible? Andrea