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QR Codes and UPC codes

Discussion in 'All Other Software' started by r_khan, Nov 2, 2011.

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  1. r_khan

    r_khan Thread Starter

    Joined:
    Aug 18, 2003
    Messages:
    376
    hello,

    I am a small business owner that wants to incorporate gift certificates.

    However, i have a problem; i know how to make the gift certificate (via a template), the amount (it will be pre-printed with $5-$25, in increments of $5), generate a UPC code and a QR Code...

    BUT

    How do i ensure that the QR Code and the UPC is redeemed ONLY ONCE?

    For example, I want the qr code and the upc to have a "one time use only"

    How do i do that?
     
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