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A recent Forrester report, which estimated adoption of QR codes among mobile users increased from 1% in 2010 to 5% this year, noted that the technology has encountered various obstacles to broader use.

These include basic unfamiliarity of what these codes even do, the required step of downloading a 2D barcode reader -- and most importantly for marketers -- disappointing content that turns off potential users. For example, codes that embed long URLs, making them harder to scan, or that lead to content that has not been mobile-optimized and offers little value to end users.

The Yankee Group study also pointed out that QR codes are vulnerable to misuse. What happens when fraudsters place their own codes as stickers on top of legitimate QR codes to obtain personal information by redirecting users to a fake Web site?

Microsoft recently launched their updated, all-in-one, QR Code and Tag reader, that also has the ability to interact with NFC (Near Field Communication) technology.

The new Microsoft Tag app can not only scan QR codes and Tags but it also can read Near Field Communication triggers too.

Why are U.S. retailers slow to adopt NFC payment technology? One reason is the expense and effort required to install NFC-enabled point-of-sale equipment in stores and to integrate it with merchants' systems.

It's a bit of a chicken-and-egg dynamic: Retailers typically don't invest in offering a new payment option until they see widespread consumer demand; but few consumers are likely to prefer a payment option that's not yet widely accepted.

Another Open Mobile Summit panelist, PayPal's VP for mobile, David Marcus, made this point: "Today, retailers learn about customers at the least effective time -- just when they're leaving the store. They'd like to know about you when you arrive at the store, so they can customize your shopping experience and treat you properly."

These digital coupons are often used as an incentive to encourage mobile consumers to scan a QR code or interact with an NFC-based advertisement.

55% of mobile consumers in the U.S. are interested in receiving mobile coupons, especially through interaction with NFC technology. The report notes, however, that only 10% of consumers have ever received a coupon.

even as quick response (QR) codes start to gain traction, they are under threat from the next generation of technologies that offer new and unique forms of interaction between print and digital media, such as near-field communication (NFC) augmented reality (AR), digital watermarking and even iQR Codes.

Near-field communication

Augmented reality