A $400,000 investment by Verizon Communications Inc. in start-up CardStar Inc. may not sound like much, but it’s a hint that wireless carriers are realizing that commerce is going increasingly mobile, and that there are various ways for operators to get in on the revenue earned by enabling such transactions.
CardStar is the creator of a mobile-phone application that enables users to consolidate all of their membership cards and loyalty programs - be they frequent flier miles or buy-one-get-one free offers from a local....