Something that syncs to the phone and displays a barcode, ie Starbucks card, grocery store, lowes, etc. Location based would also be nifty....similar to Google Loyalty Cards in Wallet or Apple's Passbook
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While that may work on the OP's phone, this being a Gear 2 forum, probably looking for one on the Gear 2 - Google Play store apps don't run on Tizen.You might like Stocard available in the Google Play Store for free! It lets you pick from pre-set vendors or scan in your own cards and use them instead of carrying the actual card. Enjoy!