As everyone targets mobile-payment clients on smartphones, Apple gets the retailers on iOS Every other day, it seems, someone has announced a mobile payments app or joined a mobile commerce consortium. We’ve seen a surge of such announcements in the last year, but I remember writing about a similar mobile payments wave a decade ago. Yet very little has changed in practice in day-to-day payments.So I was surprised last weekend when I went into the Nordstrom Rack chain clothing store and was approached while waiting in line by a roving clerk equipped with a portable payment terminal — finally, a slice of reality amid the hype. These units typically fall into two camps: either a heavy, ungainly contraption put out by a cash register manufacturer or the special sled-equipped iPod Touches at the Apple Store. This clerk had one of the latter. We chatted about the device, and he mentioned the chain was in the process of ripping out all of its cash registers, to be replaced with the iPod Touch-based mobile terminals.[ Why the future is the mobile wallet, not merely mobile payments. | Subscribe to InfoWorld’s Consumerization of IT newsletter today. | Get expert advice about planning and implementing your BYOD strategy with InfoWorld’s in-depth “Mobile and BYOD Deep Dive” PDF special report. ] Nordstrom Rack is hardly alone; it’s following an industry trend of dumping the aisles of cash registers seen in stores for decades. By 2015, the traditional cash register may be gone from whole swaths of the market, relegated to grocery stores where the sheer volume of items per basket requires a table to set them on. I suspect many small stores will keep their counters but dump the large cash register in favor of the mobile payment terminal, one that very likely will have an iPod Touch at the core.The use of a sled around the iPod Touch means that the clerks can swipe credit and debit cards — no need to worry about proprietary technologies such as Square’s or haphazardly adopted advances such as near-field communications (NFC). Plus, if those other payment methods get traction, a merchant need just replace the sled with a new one that supports the technology — much cheaper than replacing today’s point-of-sales terminals.Nordstrom Rack had small tables throughout the store where the clerk brought mobile payers. The tables had two chief functions: hold the bags for the purchased goods and provide a perch for a tiny receipt printer. The printer didn’t use Apple’s AirPrint, though that no doubt will come. Instead, it has a QRC sticker the clerk scanned to tell his mobile terminal what printer to send the receipt to over the network. Printing was an option, but the preferred receipt was an emailed copy on a customer’s smartphone. That way, the store could use it in lieu of paper to verify a purchase when the customer left the store. If this sounds like the way the Apple Store does business, it is. What surprised me is how quickly that approach is becoming mainstream, while the larger payments industry continues to dither around standards at the client end. Apple has its game there, too, with the Passbook service in iOS 6. Passbook is marketed as a convenient way to hold airline, rain, and theater tickets. But it’s also meant to be a broad-based mobile wallet for receipts and, at some point, an extension of Apple’s payments system in the iTunes Store, which already knows your credit card numbers. (Apple’s own Apple Store app and its EasyPay service lead the way, using your iTunes-associated credit card for payment and in-app electronic receipts to show you’re not a thief.)Apple is hardly the only game in town, and it’s not one of the media darlings in this field, unlike Google and Square, among others. For example, Starbucks recently signed a deal with Square to use its mobile payments system — a huge deal for Square, to be sure.I have the Square Wallet app (formerly called Pay by Square) on my iPhone, but I have yet to find a place that accepts it. One reason may be that I favor my local coffee shop Martha & Bros. — whose staff I know and whose coffee is intensely flavorful — over the fairly bland McDonald’s of coffee drinks. Still, everywhere I go I check the Square Wallet app to see if anyone nearby uses it. Very few do, despite Square’s prominence. And forget about the hordes of wannabes. Ironically, Square got its start with its card-swipe hardware add-on for iPhones and iPod Touches — similar to the sled approach used by Nordstrom Rack and others. And Square remains a big player in the Apple-based terminal market. At least Square’s client technology is in use in dozens of pilots. Google’s big mobile payments push a year ago has gone nowhere, and the Isis consortium of credit card processors — which don’t want to share transaction revenues with the likes of Apple, Google, or Square — has been bogged down by endless rounds of meetings. Isis will finally launch its initial rollout this coming Monday, though just in two cities (Salt Lake City and Austin, Texas).Apple is famous for creating a new technology and infecting users with it: iTunes, the iPhone, and the iPad. It’s also known for reinventing a flailing technology and infecting users with a version that works: the iPod and Apple TV. What’s interesting in the context of mobile payments is Apple’s growing traction on the business side, with retailers. That’s not typical of Apple, but it may represent a new strategy to target the market from both sides.Look at Apple’s announcement this spring about getting most of the world’s carmakers to adopt Siri as a user interface in their upcoming automobiles. Or Apple’s quiet but methodical enablement of first mobile device management in iOS and now in OS X, which makes Apple devices slide much more easily into the complex world of IT management after decades of being ignored by IT tools. I don’t think for a minute that Apple will monopolize the mobile payments market the way it does the tablet market, the music market, or the MP3 player market. But I do think it is a quiet giant in an industry that we interact with every day. It’s also a bellwether for that industry’s payments technology — on both sides of the transaction.This article, “Apple’s iPod Touch is fast becoming the new cash register,” was originally published at InfoWorld.com. Read more of Galen Gruman’s Smart User blog at InfoWorld.com. For the latest business technology news, follow InfoWorld.com on Twitter. Software DevelopmentTechnology Industry