If you’re the sort of person that has a bunch of different credit cards and you use them all depending the rewards that are best at any given time, you need to check out Wallaby. Wallaby is sort of a digital wallet service that uses a physical credit card. You register all of your credit cards with Wallaby, you get one single physical credit card use when you’re shopping.
The idea is that you swipe that single physical Wallaby credit card and Wallaby’s backend decides which of your individual credit cards will give you the best rewards at the time you purchase. The backend somehow knows which card has the best rewards for any given purchase as well.
For instance if on a flight you can get double reward miles with one credit card, and a discount on dinner at the airport with another Wallaby knows which card to use. The service will cost $50 per year, but everyone gets service free for six months and the first 5000 users will get free service for a year.
via Techcrunch
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