Pass2U Checkout is the best Passbook verification service for merchants.
Merchants could experience features of pass redemption and distribution by clicking “Try It First” directly.
Features
1) Distribute Customized Passes: Distribute personal passes to build a strong relationship with customers.
2) Multiple Redemption on One Pass: Be adaptive to different period of discounts, courses and campaigns of passes.
3) Update Points and Credits Instantly: Update information of passes to enrich consumption experiences and repurchase intention.
4) Records Retention: Merchants can search all records anytime.
If you want to issue your own passes, you can sign up an account at http://www.pass2u.net , and set up your checkout service account, then you can log in this app to redeem your passes.