WSJ: Google teams with MasterCard and Citigroup for NFC payments, also files patent app

Ever since the Nexus S and its nifty little NFC chip hit the market, there's been speculation that El Goog was planning a foray into the mobile payment arena currently occupied by the likes of Charge Anywhere. Now, it looks like that plan may be in high gear, as the Wall Street Journal reports that Google's secretly partnered with MasterCard and Citigroup to test out just such a system. According to the publication, the early demo pairs "one current model and many coming models of Android phones" with existing Citigroup-sponsored credit and debit cards, and is using the phones' NFC chips with those VeriFone readers we recently heard about.

What's more, a newly-published patent application from the crew in Mountain View may hint at the software behind such things. The application describes a service that sets up Google as a third-party broker who receives the shopping cart info of customers placing orders via a device (including those of the mobile variety), allows them to select shipping and other options, and provides the total order cost. It then collects payment, coordinates shipment, and forwards order information to the seller to complete the transaction. So companies can have Google handle all their payment-taking needs in return for getting a sneak peek at what folks are buying -- something that the WSJ's sources say might be a component of the setup Google's testing right now -- as opposed to other third-party services, like Paypal, that only obtain and exchange payment info with merchants. Looks like Alma Whitten (Google's Director of Privacy) has her work cut out assuaging the concerns such a system will inevitably create in an increasingly privacy-minded populace.

Sean Hollister contributed to this report.

Apple patent application points to denser batteries, improved charging technique

Some might think a ten-hour Macbook battery mighty fine, but we're happy to say that Cupertino's not quite satisfied. AppleInsider spotted a pair of Apple patent applications detailing a improved way of juicing up those lithium-polymer cells, which should greatly increase the number of recharge cycles they can endure -- or, optionally, allow Apple to use denser batteries that last longer on a charge. We'll break it down for you: the graph in the upper-left shows how Li-ion batteries currently charge, first very rapidly (constant current, increasing voltage) and then more slowly (constant voltage, decreasing current) to top the cells off.

What Apple's proposing is the multi-step method depicted on the right, where current and voltage trade off, to charge the battery while being far less harsh on the physical chemistry of the electrodes inside. As you can see in the bottom graph, the multi-step CC-CV cells lose much less of their potential after 300 recharge cycles, but that's not all Apple's cooking up -- the company figures that it can increase the thickness of the electrodes to improve battery life (by as much as 28Wh/L, according to one chart) without negative effect thanks to the softer charge. Sure, we'd rather have plant-eating graphene supercapcitors, but this sounds like a plan for now.