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Apple Patents Alternative To NFC
another random user sends word that a set of newly-granted Apple patents published by the USPTO includes an alternative to the near field communication (NFC) technology that has begun to pop up in mobile devices. From the article:
"Apple has received a Granted Patent relating to techniques for triggering a process within a portable electronic device that identifies itself for purposes of establishing communications with another device that is in proximity. At the moment, NFC is the technology that's getting all of the attention lately in respect to making it easier for two mobile devices to share information. While Apple is likewise doing research with NFC, they're also working with an alternate methodology for which they've now gained a patent for. In accordance with Apple's newly granted patent, a method for network device discovery monitors a compass output in a portable electronic device. As the portable device and an external device come closer to each other, a magnetic field signature is computed based on the monitored compass output. A determination is then made as to whether the computed signature could be associated with or implies that a previously defined type of electronic device (with which a network device discovery process can be conducted) is in close proximity. In other words, as the two devices come closer to each other, their respective magnetic characteristics cause the compass output to change in a way that implies that a network device discovery process should be initiated between the two devices."
I believe you missed something important.
Definition: prior
adj. Existing or coming before in time, order, or importance.
File date for Apple's patent: Q4 2009
Your "prior" art: May 2011
Now, which one was the prior one again?
All of that said, it wouldn't surprise me if someone else did beat them to it. It just isn't the person you linked.
USB power has a fundamental limitation - micro-USB connectors are only rated for 1.7 A. The USB charging spec maxes out at 1.5 A. That's right at the edge for today's phones and battery technology. Lithium batteries exist which can be charged at a 1C rate, and a 1.5 Ah battery is about what most smartphones have. It's more limiting for tablets, which have batteries which can charge faster than USB can allow.
"National Security is the chief cause of national insecurity." - Celine's First Law
"So will Apple try to licence this technology to other mobile manufacturers, or will it forever remain on the shelf, never attaining sufficient popularity for POS vendors to support it?"
Who cares? I'm not trying to troll here, but the fact is that NFC was largely busted almost before it came off the shelf (researchers able to covertly read confidential info from mobile NFC devices from several feet away).
Unless technology changes significantly and soon, making financial transactions via radio is just plain a bad idea. You want to exchange E-cards? Fine. You can already do that via infrared or wifi or bluetooth. You don't need NFC (or a similar device or protocol) to do it.