Mobile payments

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There's a lot of ways to pay for things these days without using cash. Credit and debit cards are the biggest, but mobile payments might be the next big thing.

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If you're not intimately familiar with the term "mobile payments," get ready to start hearing it a lot more. Basically, it means "paying for something with a smartphone." Right now some of the big players are Google and a company called Square. But today there's news Groupon is getting in on it.

We've got news this morning that a group of major retailers, including Walmart, Target and 7-Eleven, are teaming up to create their own network for mobile payments. It's one more way for stores to draw you closer -- and get a jump on outsiders, like Google.

Mobile payment firm Square will begin processing all credit and debit transactions at Starbucks. Could it signal the beginning of the end of cash?