Reading NFC Tags with iPhone 6 / iOS 8 -


now apple announced iphone 6 have nfc chip, know if ios 8 enable reading/detecting rfid tags iphone 6 device? have details share on this?

the iphone6/6s/6+ not designed read passive nfc tags (aka discovery mode). there's lot of misinformation on topic, thought provide tangible info developers consider. lack of nfc tag read support not because of software because of hardware. understand why, need understand how nfc works. nfc works way of load modulation. means interrogator (pcd) emits carrier magnetic field energizes passive target (picc). potential generated carrier field, target able demodulate data coming interrogator , respond modulating data on top of same field. key here target never creates field of own.

if @ iphone6 teardown , parts list see presence of small nfc loop antenna use of as3923 booster ic. design intended custom microsd or sim cards enable mobile phones of old payments. type of application mobile phone presents card emulated credential high power contactless pos terminal. pos terminal acts reader, energizing iphone6 as3923 chip. as3923 block diagram shows how rx , tx modulation boosted signal presented reader device. in other words iphone6 not meant provide field, react one. that's why it's design meant nfc card emulation , perhaps peer-2-peer, not tag discovery.

as3923 booster ic

there alternatives achieving tag discovery iphone6 using hw accessories. talk these integrations , how developers can architect solutions in this blog post. our low power reader designs open interesting opportunities mobile engagement few developers thinking about.

disclosure: i'm founder of flomio, inc., techstars company delivers proximity id hardware, software, , services applications ranging access control payments.

update: this rumor, if true, open possibility iphone practically support nfc tag discovery mode. glass design not interfere nfc antenna metal of current iphone. we've attempted design approach --albeit cheaper materials-- on of our custom reader designs success looking forward improvement.

update: ios11 has announced support "nfc reader mode" iphone7/7+. details here. api supports reading ndef messages (no iso7816 apdus) while app in foreground (no background detection). due out in fall, 2017... check screenshot wwdc keynote:

enter image description here


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