The Speculation: If you have certain Sprint phones, today you can use Google Wallet to tap and pay at a handful of stores. On AT&T, Verizon and T-Mobile, you will soon be able to use a competing service called ISIS to turn your phone into a credit card. With all this activity, you might expect that, in 2013, all the major stores would support mobile payments. Not so fast there, Ms. Kardashian.
Why it Won't Happen in 2013: You may see a few more stores add support for one or both payment standards, but many phones, including the iPhone, don't have the NFC chip necessary to support them. Even worse, consumers have few incentives to switch from old fashioned credit and debit cards. Forrester Research Analyst Denee Carrington recently told us that mobile payments won't catch on until at least 2015.