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Exist NOT cloning or feigned NFC ID tag or better key?

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Astrid

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I need something like a keyring, which would clearly identify the owner?
I know
NFC Smart **broken link removed**
**broken link removed**
**broken link removed**

What it does not copy or simulate airing before the read sequence of bits?
Possibly there is anything non-contact and non cloning?
want to connect to MCU instead of the keyboard for entering access code
 

Going through the links,
1. iButton seems to be secure data storage device.
2.NFC smart tags can store very small amount of data,like a url link for one.
RFID seems to be the only item that you can use for identification purpose(s).
All of the three technologies can be cloned by various means.
For ibutton:
https://hackaday.com/2009/07/09/hacking-an-ibutton/
For NFC smart tags
http://www.nfcinteractor.com/cloning-tags-with-
nfc-interactor/
For RFID
https://www.instructables.com/id/RFID-Emulator-How-to-Clone-RFID-Card-Tag-/
Out of these,only iButton can be connected to MCU,because it supports data communication through one wire protocol.
 

In simple words, a solution with accessable communication path, e.g. any wireless protocol, needs strong cryptography to prevent ID counterfeit. Something like a challenge-response procedure with sufficient long key.
 

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