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Both have advantages that make them complimentary identifiers and not actually that competitive with each other. Ultimately they promote each other rather than
by s_dev 7y ago
Both have advantages that make them complimentary identifiers and not actually that competitive with each other. Ultimately they promote each other rather than consuming each others market share and I see both last years and years in to the future.
You can print a QR on paper. You can't do that with NFC.
NFC works in low light conditions -- QRs typically don't. NFC chips have allocated uids -- QRs are mutable. NFC is expensive and QRs are cheap. QRs are universal while NFC is tightly controlled.
- ryukafalz 7y ago>NFC chips have allocated uids -- QRs are mutable. NFC is mutable too; the low-cost unpowered chips you'll buy are mostly write-once read-many, but an NFC device with host card emulation can largely be whatever you want it to be. I suppose it's analogous to a QR code displayed on a screen vs. a printed QR code.
- s_dev 7y ago>but an NFC device with host card emulation can largely be whatever you want it to be. Nope -- even host card emulation can't emulate the UID for obvious reasons. Hence making it controlled.
- ryukafalz 7y agoWell sure, but it can emulate just about everything else. And if you're depending on the UID not being spoofable, well... https://www.aliexpress.com/popular/nfc-card-writable-uid.html https://www.aliexpress.com/popular/nfc-card-writable-uid.htm...