A few things that characterize mobile payments are early stage experimentation and standards battles. That’s to be expected in any embryonic sector.  There’s NFC, mobile card readers, POS hardware that scans the barcode on your screen (a la Starbucks), to name a few.

Sometimes the mobile device is on the payers end, like like PayPal’s new app; and sometimes it’s on the receiving end like Square. All the nuance, standards and differing use cases are too often lumped together as just “mobile payments” by generalist media and linkbait headlines.

To cut through a lot of this clutter, we released a report recently on the state of the union in mobile shopping and payments. One of the many standards that will vie for consumer adoption, appeal and comfort levels is what Apple is likely to unveil for purchasing physical goods.

This is an outlook I’ve been arguing for a while, which was affirmed last week by Tim Cook’s earnings call statements and some WSJ digging. The idea is roving transactions throughout retail stores by scanning items with an iPhone and paying with iTunes. No checkout aisle required.

Apple has long been a sleeping giant in mobile payments for physical goods. It already owns the consumer touch point (375 million iPhones) and payment processing (600 million iTunes accounts). And for a while it has employed a version of the model outlined above in its own stores.

The next step is to push that out to other retailers. It’s perfect for places like IKEA: scan an item, pay with iTunes, grab it from the warehouse, and be on your way. The plot has thickened since my original prediction with iTouch (payment authentication) and iBeacon (lead you through the IKEA maze).

Of course there are lots of moving parts such as security, parallel standards (like iBeacon), and most of all retailer relationships. The latter could be sticky but if there’s anyone with a proven ability to partner with industries that its in the process of upending, it’s Apple.

My colleague Suzanne Ackley covered more of last week’s developments and related BIA/Kelsey data. And over the weekend I unpacked some of the possibilities at Huffington Post. Check it out and let me know if I’m crazy. Or if you want to engage over the topic, that’s what we’re here for.