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How we pay: Credit card vs. mobile wallet

Cash, check, plastic credit cards or debit cards had been the only ways people paid for products and services. But today, new technologies have given consumers a dizzying array of other options as well.

Chief among them are mobile wallets.

A mobile wallet can turn a smartphone into an access device to connect with a payments network, says George Peabody, senior director at Glenbrook Partners, a payments research and consulting firm in Menlo Park, California.

"The phone is the most convenient tool (for this purpose)," Peabody says. "It's always within reach, and it's providing the user interface to existing payment vehicles like prepaid or credit cards."

Mobile wallets aren't so different from plastic credit cards in the sense that both types of payments are processed through the same networks, says Jason Oxman, CEO of the Electronic Transactions Association, a Washington, D.C.-based trade group that represents electronic payment companies.

Mobile wallet versus a credit card

What's different is that the credit card number, expiration date and other information are stored in a mobile app or chip on the smartphone instead of on a plastic card with a magnetic stripe or chip.

"You're maintaining your card credentials either literally in your phone -- for example, in a secured chip -- or you are maintaining them in the cloud and accessing them using your phone," Oxman says.

Mobile apps use near-field communication, or NFC, which enables the smartphone to communicate with the payment terminal at the point of payment. Typically, the consumer taps or waves the mobile device to allow the payment terminal to access the stored payment credentials.

A mobile wallet -- Google Wallet, for example -- can also store coupons, rewards cards, gift cards and so on. A password or PIN might be required to access the information for security purposes.

Transit companies have been among the early adopters, Peabody says. Other companies such as fast-food chains Burger King and Wendy's also have taken an interest, according to news reports.

Scan a bar code

One popular mobile wallet option is the Starbucks Card, which is accepted only at the company's own Starbucks stores, Teavana, Evolution Fresh and La Boulange stores. The card, which functions like a smartphone app, is preloaded with funds from a gift card or credit card. Then, the smartphone is used at the point of sale to scan a two-dimensional bar code that Oxman describes as "essentially a pictorial representation of a UPC code."

Mobile payment scanner © LDprod/Shutterstock.com

"It's a picture on your phone, and the point-of-sale terminal scans that picture," he says.

The iPhone version of the Starbucks Card allows customers to add a tip to their transaction, too, according to a company statement.

Payment in the cloud

Email might not leap to mind as a payment technology since paper money obviously can't be attached to an electronic message, and it wouldn't be smart to disclose credit card credentials in the body of an email.

But Google has turned its Gmail service into a payment option by linking it to Google Wallet.

"The email itself doesn't have money in it, but Google goes into the cloud to get your payment information," Oxman says.

The "cloud" refers to computer servers that store enormous amounts of data and are linked through the Internet.

Another example of cloud payment is the use of PayPal at some Home Depot stores.

"You type your mobile phone number and PIN into the payment terminal and the terminal accesses your PayPal account," Oxman says. "Your phone number is a means of initiating the PayPal transaction."

The arrival of virtual currency

Virtual currencies -- the best-known is bitcoin -- exist only in cyberspace and are beyond the bounds and conventions of the traditional banking system and nations' currencies.

Oxman points out some of the risks: no mechanism for returns or refunds and no protection against loss or theft.

"If your bitcoin wallet is hacked, which has happened on a number of occasions, there is no one to call to get that bitcoin back. The protections of the traditional payment system aren't available in the virtual currency world," Oxman says.

Pay it safe

Despite the wow factor of mobile wallets, cloud payments and virtual currencies, most people still prefer traditional payment methods, which are convenient, familiar, widely used and, to some extent, relatively secure.

"There's a reason why it's so easy to use your debit card. It's because there's a whole network and system behind it that allows you to use your debit card anywhere in the country," says Wayne Abernathy, executive vice president of financial institutions policy and regulatory affairs at the American Bankers Association.

Cash still works fine, too.

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