Watch this video to learn how to implement digital coupons and access real time redemption statistics without having to integrate with the Point of Sale (POS).
If you want to know how many coupons have been redeemed, you can look in your PassKit dashboard and look at the number of passes that have been deleted (as per the images below).
Unless you are deleting passes manually, and before redemption;
the number of deleted passes = the number of redeemed coupons
Because as soon as a pass is redeemed it is deleted from the PassKit database.