I'm looking for neat ideas to get the most from my new NFC ring.
The March of the Droids event last month included a couple of NFC-related highlights. One was a presentation about NFC implants; the other was a trade stand for NFCRing.com. I was looking forward to both.
For those who don't know, NFC (Near Field Communication) is a technology whereby a powered device such as an NFC equipped smartphone can exchange data with a passive NFC tag or another powered NFC device. The tag doesn't need any power (it draws what it needs from the other device). It's really short range - for all practical purposes, you may as well assume that the device and tag need to be touching to work. You can also use NFC between two powered devices (e.g. 2 smartphones) to initiate data transfer, such as sending a photo or your contact details to another phone, although the devices will generally use Bluetooth or WiFi direct for the actual data transfer; NFC is just used to set up the connection.
The same technology is used in Credit Card machines (the powered bit) and modern Debit cards (the passive bit) for Contactless payments. Many Android and Blackberry phones and tablets have NFC radios, and the iPhone 6 and 6+ have it too, but Apple have restricted it so that it can only be used for Apple pay.