Ikimenyetso cya NFC kirwanya icyuma gikozwe mu mpapuro cyangwa ikarita ya PVC hamwe nigice cyibikoresho bikurura, bishobora kugera ku ngaruka zo kurwanya ibyuma. Ikirango gishobora gusomwa no kwandikwa hejuru yicyuma. PVC ifite label irwanya ibyuma irashobora gukumira amazi, aside, alkali no kugongana, kandi irashobora gukoreshwa hanze.
Ikimenyetso cya NFC anti metal cyakozwe na MINA gishobora kuba hamwe nibyiciro bine bikurikira bya NFC:

Ubwoko bwa mbere bwa NFC anti metal tag bushingiye kuri protocole 14443a. Nibura byibuze yibuka ni 96 bytes, irashobora kwagurwa muburyo bugaragara. Niba tags zirimo gusa ububiko bworoshye bwo gusoma-kwandika, nko gushyira mubikorwa byoroheje byamamaza byanditse, ibimenyetso birahari rwose. Ubu bwoko bwa tagi bukoreshwa cyane mugusoma amakuru kandi ifite advaes yimikorere yoroshye nigiciro gito.

Ubwoko bwa kabiri bwa NFC anti metal label nayo ishingiye kuri protocole 14443a, ariko ishyigikira gusa ikarita yatanzwe na Phlips.

Ubwoko bwa gatatu bwa NFC ibyuma birwanya ni ubwoko bwa tekinoroji ya fecila itangwa gusa na Sony.

Ubwoko bwa kane NFC anti metal tag hamwe na protocole 14443A / B. Ubwoko bwa tagi ni ubw'ubwenge bwubwenge, bwakira amabwiriza ya porogaramu ya protocole yamakuru (APDU), ifite umwanya munini wo kubika, irashobora kuzuza ibyemeza cyangwa umutekano algorithm, kandi irashobora gukoreshwa mugutahura imikoranire yubwenge hamwe nibikorwa bifitanye isano na label ebyiri. Ubu bwoko bwa label bufite intera nini ya porogaramu kandi irashobora guhuza nubushakashatsi buhoraho hamwe niterambere mugihe kizaza.