Petře měl jsi pravdu, jde o rychlost a make it simply :_)presnou odpoved jsem nalezl zde:
http://blog.jabra.com/whats-nfc-and-why-should-you-care/What’s the point of NFC in Bluetooth headsets?You’ve probably heard of Bluetooth headsets with NFC. That may sound confusing. Don’t Bluetooth headsets already use – you know – Bluetooth to connect to your smartphone?
They do, and if you’ve ever owned a Bluetooth headset, you’re probably familiar with the many steps involved in pairing it with your phone. You put your headset in “pairing mode,” turn on Bluetooth on your smartphone, tell it to scan for new devices, pick your new Bluetooth headset from the list, maybe enter a passkey, then cross your fingers and pray for it all to work.
That’s where NFC comes in: It acts as a little helper in the tedious pairing process. If both your smartphone and your Bluetooth headset have NFC, pairing them is no more complicated than tapping them together for a second. Here’s a quick demo:
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