<font color="darkgreen">I think its getting overly complicated. You will have to give each and every vendor a active list of whos subscribed. Now if you do like some auto insurance companies do with priting out a membership card with their info on it and a watermark and valid date range, vendors would only need to see that its active. Yet still its suscptable to duplication as its only am matter of how badly someone wants to cheat the system, eventually they will be able to fake anything. </font>
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