NTAG vs MIFARE NFC Stickers: Chip Bɛn na Ɛteɛ?

Sɛ woreyɛ sourcing aNFC sticker ahorow a wɔde kyerɛw nsɛmwɔ nneɛma a wɔde kyekyere nneɛma, aguadi, akwan a wɔfa so kɔ hɔ, anaasɛ nneɛma a wɔde di dwuma ho adansedi ho no, gyinaesi ankasa a edi kan taa yɛNTAG ne MIFARE ntam nkitahodi. Nnipa mmienu no nyinaa yɛ high-frequency (13.56 MHz) chips a ɛdi ISO/IEC 14443 gyinapɛn akyi, na wɔbɛtumi adan mmienu no nyinaa ayɛ no adhesive labels a ɛyɛ tratraa, nanso wɔasi ama nnwuma ahodoɔ koraa.

Nkyerɛase tiawa no: NTAG NFC sticker yɛ adebɔ mu paw bere a nkitahodi titiriw no yɛ telefon so tap, te sɛ URL a wobɛbue, afiri ho nsɛm a wobɛkyerɛ, warranty a wobɛkyerɛw, anaasɛ app bi a wode befi ase. MIFARE NFC sticker ahorow no fata akenkanfo-ne-nhyehyɛe aplikeshɔn te sɛ kwan a wɔfa so kɔ hɔ, tekiti, asɔremma, ne closed-loop payment, baabi a tag no yɛ adansedi krataa biako wɔ nhyehyɛe a wɔhwɛ so mu.

Enti asɛmmisa a eye sen biara no nyɛ chip bɛn na ɛyɛ den, na mmom nea ɛsɛ sɛ sticker no yɛ ankasa. Nkyɛmu a ɛwɔ aseɛ ha no nantew fa saa gyinaesie no mu sɛdeɛ ɛdi agorɔ wɔ nnwuma a ɛdi kan ansa na{1}}yɛ ankasa mu, a chip pɔtee a wɔpaw, ntotoho pon a ɛdi mũ, anti-atoro atoro deep dive, ne pre{3}}order checklist.

 

Mmuae ntɛm: NTAG anaa MIFARE?

Fa eyi di dwuma sɛ nea wubefi ase ntɛmntɛm, afei si nsɛm no so dua kɔ akyiri.

Sɛnea mmara kyerɛ no: sɛ adwuma no te telefon so a, NTAG yɛ ntɛmntɛm na ne bo nyɛ den sɛ wɔde bedi dwuma. Sɛ egyina akenkanfo, nsafe, tumi krataa, anaa nnwuma a ahobammɔ wom so a, MIFARE, mpɛn pii no DESFire, ne akwankyerɛ a ahobammɔ wom.

 

Nsɛmmisa anum a ɛsɛ sɛ wubisa ansa na woapaw chip

"Chip a ɛnteɛ" haw dodow no ara fi hardware a wobɛpaw ansa na use case no ada adi pefee. Di kan tu mmirika fa nsɛmmisa anum yi mu, na mpɛn pii no mmuae no da adi.

• Hena na ɔkenkan, telefon anaa ɔkenkanfo a wahyira ne ho so?Sɛ ɔmanfo de wɔn ankasa fon bɔ so a, lean NTAG. Sɛ fixed reader, controller, anaa turnstile scan no a, lean MIFARE.
• Ahobammɔ dodow ahe na wuhia?Nsɛm a wobue kɛkɛ no hia NTAG a ɛyɛ gyinapɛn nkutoo. Cryptographic, server-nokwaredi a wotumi di ho adanse no twe adwene si NTAG424 DNA so. Encrypted access anaa stored value twe adwene si MIFARE DESFire so.
• Data dodow ahe na ɛsɛ sɛ chip no kura?URL biako pɛ hyɛ NTAG213 so yiye; NDEF kyerɛwtohɔ ahorow pii anaa nsɛm tenten kyerɛ NTAG215 anaa NTAG216.
• Ɛhe na ɛbɛtra so?Mpɛn pii no, plastic, krataa, ne ahwehwɛ yɛ fɛ, nanso dade ma antena no yɛ adwuma yiye, enti wuhiaanti-dade NFC stickera ɛwɔ ferrite a wɔde ahyɛ mu.
• Nneɛma dodow ne sikasɛm nhyehyɛe bɛn?Adetɔfoɔ akɛseɛ a wɔde di dwuma no fa ɛka-NTAG a wɔayɛ no yie; managed credential systems kura MIFARE chip ne integration ho ka a ahobammɔ ne control na ɛfata.

 

Dɛn ne NTAG NFC sticker ahorow?

NTAG NFC sticker ahorow no de NXP NTAG chip abusua no di dwuma na wɔayɛ ama smartphone nkitahodi a ɛnyɛ den na wotumi de ho to so. Wɔde data sie wɔ...NDEF format a NFC Forum no akyerɛkyerɛ mu, a ɛkame ayɛ sɛ ɛma telefon biara kenkan tag bi na ɛyɛ adwuma wɔ so, bue link bi, kyerɛ nsɛm, de obi a ɔne no di nkitaho sie, anaasɛ ɛde app bi fi ase, a enni app a wɔatu ho ama.

Ɛsono nea wɔtaa paw no titiriw wɔ nea ɔde di dwuma no nkae mu:

• NTAG213 na ɛwɔ hɔwɔ bɛyɛ baiti 144 a ɔde di dwuma no memory. Ɛyɛ papa ma URL anaa nneɛma ho kyerɛwtohɔ tiawa, na ɛyɛ default ma aguadi ne nneɛma a wɔde kyekyere nneɛma dodow no ara.
• NTAG215 na ɛwɔ hɔwɔ bɛyɛ 504 bytes, mfaso wɔ so bere a wuhia NDEF kyerɛwtohɔ ahorow pii anaa payload a ɛware.
• NTAG216 na ɛwɔ hɔwɔ bɛyɛ 888 bytes, ma adefo, multi{1}}record content.
• NTAG424 DNA a ɛwɔ nipadua no muɛwɔ baiti 416 a wɔde AES-128 cryptography ne tap-nokwasɛm nkrasɛm soronko bi aka ho; wɔasi ama ahobammɔ ne atoro a wɔko tia sen sɛ wɔde bɛfa nkitahodi a ɛnyɛ den.

Ɔkwan a mfaso wɔ so a wobɛfa so ayɛ chip no kɛse: sɛ woreyɛ encoding URL biako pɛ a, ɛkame ayɛ sɛ NTAG213 dɔɔso bere nyinaa, efisɛ link tiawa a wɔtaa de di dwuma no wɔ ne 144-byte anohyeto no ase yiye. Tu kɔ soro kɔNTAG215 na ɛwɔ hɔanaa NTAG216 bere a wuhia kyerɛwtohɔ pii (sɛ nhwɛso no URL a wɔde nsɛm aka ho a wɔde app kyerɛwtohɔ aka ho), URL tenten a ɛwɔ tracking parameters, anaa headroom a wobɛsan de -encode akyiri yi.

 

Dɛn ne MIFARE NFC sticker ahorow?

MIFARE NFC sticker ahorow no de NXP MIFARE chips di dwuma, a ɛhyɛ akwan a wɔfa so kɔ hɔ, ɔmanfo kar, tekiti, asɔremma, ne closed-loop payment so. Sɛ wɔde toto NTAG ho a, MIFARE yɛ system-oriented: wɔayɛ chip no sɛ ɛne akenkanfoɔ, safoa, ne akyi softwea bɛyɛ adwuma, ɛnyɛ fon nko ara.

• MIFARE Classic 1K / 4K na ɛyɛ nea wɔde di dwumayɛ adwuma pɔnkɔ a wɔde agyapade ayɛ a wɔda so ara hu wɔ nhyehyɛe dedaw pii mu. Ɛde Crypto-1 cipher a ɛyɛ ne dea di dwuma, a ɛwɔ mmerɛwyɛ ahorow a wɔakyerɛw ho asɛm yiye-, enti ntease wom ma asiane a ɛba fam-asɛyɛde-a ɛne ne ho di nsɛ nanso ɛnyɛ nnwuma foforo a ahobammɔ kɛse wom. Sɛ wopɛ akyi a, hwɛnea MIFARE 1K kaad yɛ.
• MIFARE Plus na ɛwɔ hɔyɛ upgrade kwan a wɔtaa fa so fi Classic a ɛde AES ahobammɔ ka ho.
• MIFARE DESFire EV1 / EV2 / EV3yɛ ahobanbɔ, multi-application line, a ɛde AES-128 ne abiɛsa-twam mutual authentication di dwuma, sɛnea wɔaka ho asɛm wɔNXP no DESFire EV3 nkrataa. Ɛyɛ nea wɔtaa paw ma akwan a wɔfa so kɔ hɔ a anibere wom, akwantu, ne tekiti a wɔde ma.

Kɔkɔbɔ biako a ɛfata sɛ yɛka ntɛm: Wɔtaa de MIFARE di dwuma sɛ kaad, safe a wɔde kyekyere, anaa nsateaa a wɔde kyekyere nsa sen sɛ wɔde bɛhyɛ sticker, efisɛ saa nhyehyɛe ahorow no taa de adansedi krataa ma obi. Sɛ́ sticker ahorow no, ntease wɔ MIFARE mu titiriw ma agyapade anaa nhyehyɛe a wɔde hyɛ agyirae. Sɛ wo dwumadie no gyina kwan a wɔfa so nya- anaa asɔremma- so a, ebia wobɛpɛ ankasaMIFARE kwan a wɔfa so kɔ hɔanaa fobs mmom sen sɛ wɔde nkyerɛwde bɛkyerɛw.

 

NTAG vs MIFARE NFC sticker: ɔfã-ne-afã ntotoho

Saa pon yi de chips no toto nneɛma a ɛtaa si adwuma bi ho gyinae no ho.

 

Nsonsonoe atitiriw a ɛka wo dwumadi no ankasa

 

Smartphone akenkan: iPhone, Android, NDEF ne UID

Telefon a ɛne ne ho hyia no nyɛ ade biako; egyina nea wɔka kyerɛ telefon no sɛ ɔnkenkan so. Nnɛyi iPhone ne Android mfiri dodow no ara kenkan NDEF kyerɛwtohɔ bi a ɛwɔ NTAG tag so wɔ akyi na wɔyɛ ho adwuma, na wobue URL a wɔmfa app biara nni mu. Chip bi UID akenkan, anaasɛ akenkan sector anaa fael data, yɛ adwuma soronko a ɛtaa hia app anaa akenkanfo pɔtee bi.

Eyi ne baabi a MIFARE Classic yɛ fɛre ma adetɔfo nnwuma: ne sector data no nyɛ nea wotumi kenkan no yiye wɔ fon nyinaa so, na iPhone mmoa titiriw no sua, enti mpɛn pii no wɔde Classic ne akenkanfo a wɔatu wɔn ho ama bom sen ɔmanfo fon ahorow. NTAG ne DESFire di NFC Forum tag ahorow akyi, na ɛma wotumi hyɛ nkɔm yiye. Sɛ wɔn a wɔde di dwuma awiei no de wɔn ankasa fon bɛbɔ a, NTAG ne kyakyatow a ahobammɔ wom, na ɛboa ma wɔte asesɛnea NFC akenkan yɛ adwuma wɔ fon soansa na wode wo ho bɛhyɛ mu.

 

Ahobammɔ ne nokwaredi

Wɔayɛ standard NTAG21x chips ama nkitahodi a ɛbue. Ebinom boa 32-bit asɛmfua a ebetumi asiw akyerɛw a wɔsan kyerɛw no kwan, nanso asɛmfua nyɛ cryptographic nokwaredi, na chip UID, ɛwom sɛ ɛyɛ soronko de, nanso wobetumi akenkan na ɛnyɛ n’ankasa adanse a ɛkyerɛ sɛ ɛyɛ nokware so. Saa asɛm a etwa to no ho hia, efisɛ UID-"verification" nkutoo yɛ mfomso a ɛtaa ba a ɛko tia atoro a wɔde di dwuma no mu biako.

Sɛ wopɛ sɛ wugye nokware ankasa a, ɛsɛ sɛ chip no da ne ho adi wɔ cryptographic kwan so.NXP no NTAG424 DNA a ɛwɔ hɔde AES-128 di dwuma na ɛyɛ soronko, server-verifiable code wɔ tap biara so, a ɛyɛ den yiye sɛ wobɛ clone. Wɔ nhyehyɛe no fã no, MIFARE DESFire de -pass mutual authentication ne fael-level safoa abiɛsa ka ho, enti kaad ne akenkanfo no di wɔn ho wɔn ho nokware ansa na data biara akɔ. Sɛ wopɛ sɛnea wɔde eyi di dwuma wɔ nneyɛe mu a, hwɛ saa nsɛm a wɔaka abom yiNFC anti-atoro mfiridwuma.

 

Memory ne data nhyehyɛe

NTAG de memory a ɛnyɛ den, a ne fã kɛse no ara yɛ linear a wɔde ato hɔ ama NDEF di dwuma, ɛno nti na ɛyɛ mmerɛw sɛ wobɛkyerɛw URL ahorow, nsɛm, ne nkitahodi kyerɛwtohɔ ahorow. MIFARE de nkaeɛ a wɔahyehyɛ a ɛfa sectors, applications, files, ne access keys ho di dwuma. Ɛno ma wotumi di nea obetumi akenkan anaa akyerɛw nea so kɛse koraa, na ɛma nhyehyɛe pii, nneɛma atitiriw a wɔde di dwuma, ne sɔhwɛ ho ka.

 

System nkabom ne ɛka a wɔbɔ

Mpɛn pii no wobetumi de NTAG adwuma bi adi dwuma denam biako pɛ soNFC akenkanfo ne ɔkyerɛwfo: encode URL no, fa sticker no di dwuma, na adetɔfo tap. MIFARE adwuma taa hia akenkanfo a ɛne no hyia, safoa sohwɛ, akyi softwea, ne kwan a wɔfa so kɔ hɔ ho mmara, ne sɔhwɛ a wɔde tia live system no.

Ɛka a wɔbɔ di saa asɛm a ɛyɛ den no akyi. Nneɛma a ɛma NFC sticker bo ankasa ne chip no su, antenna kɛse, substrate (krataa, PET, PVC, anaa epoxy), tintim, sɛ́ ebia tags no yɛ blank anaasɛ pre-encoded, lamination anaa lock anammɔn biara, ne, sɛ wode dade bedi dwuma a, ferrite layer a wɔde aka ho, ne nyinaa a wɔde dodow abɔ ho. Akwankyerɛ a mfaso wɔ so no yɛ mmerɛw: ntua MIFARE a ɛyɛ den no ho ka bere a ɛho hia sɛ fon bue URL bi kɛkɛ, na mmɔ mmɔden sɛ wode ahobammɔ kwan a wɔfa so kɔ hɔ no bedi dwuma wɔ NTAG chip titiriw bi so.

 

NTAG424 DNA vs MIFARE DESFire ma anti-atoro atoro

Wɔ brand ahobammɔ ho no eyi ne paw a ɛho hia kɛse, efisɛ chips abien no nyinaa de AES-128 cryptography a emu yɛ den di dwuma nanso edi ɔhaw ahorow a ɛsono emu biara kakra ho dwuma.

NTAG424 DNA yɛ atirimpɔw-wɔasi ama adetɔfo tap-sɛ-gye di. Esiane sɛ wɔyɛ ne authentication code ma tap biara na wɔhwɛ wɔ wo server so nti, adetɔfo betumi de telefon a ɛnyɛ den na app biara nsi nokware so dua, na tap koro no ara betumi ama wɔatɔn anaasɛ wɔakyerɛw wɔn din. Ɛsan nso yɛ ɔkwan a ɛyɛ sikasɛm mu mfasoɔ kɛseɛ ma high-volume product authentication.

Wɔakyekye MIFARE DESFire ama multi-application, reader-based ecosystems te sɛ access, transit, ne stored value, na ɛyɛ paw a ɛfata bere a secure credential nso ɛsɛ sɛ ɛyɛ saa nnwuma no. Sɛ wopɛ sɛ wohwɛ nneɛma a wɔde di dwuma a ɛho tew a, ɛtaa boro nea wuhia so; sɛ wopɛ sɛ wonya adansedi krataa a ɛsɛ sɛ ɛtra akwan a wɔfa so nya anaasɛ wotua sika mu na ɛsan nso kura nokwaredi adwuma a, ɛfata yiye.

Gyinaesi a ɛwɔ nkyerɛwde biako mu: paw NTAG424 DNA ma adetɔfo-a wɔrehyia ahyɛnsode ahobammɔ, ne DESFire bere a ɛsɛ sɛ nokwaredi ne kwan a wɔfa so nya, tekiti, anaa sikatua bom tra wɔ nhyehyɛe koro no ara a wɔhwɛ so no mu. Ɔkwan biara so no, mfa wo ho nto UID check a ɛnyɛ den so, efisɛ ɛno yɛ identification, ɛnyɛ authentication.

 

Ɔkwan a wɔfa so paw denam application so

Maaguadi ɔsatu ahorow ne nkrataa a wɔde kyerɛw nsɛm a nyansa wom, NTAG213 di tap-to-bue URL ahorow, app a wɔtwe, ne ɔsatu nkratafa ho dwuma a ne bo nyɛ den na wotumi de ho to so. Masmart packaging ne nneɛma a wɔyɛ ho nsɛmte sɛ nhoma ahorow, warranty registration, ne brand content, NTAG213 kata links titiriw so, a NTAG216 ka ho bere a wuhia baabi pii.

Maafiri no ho adansedie ne anti-atoro atoro, fa NTAG424 DNA, anaa DESFire di dwuma wɔ nhyehyɛe kɛse a ahobammɔ wom mu, na ɛnyɛ static-URL chip nkutoo da. Maakwan a wɔfa so kɔ hɔ no sohwɛte sɛ apon, adwumayɛfo ID, ahɔhodan mu adan, ne mmeae a wɔabara, MIFARE DESFire anaa chip a ɛne nhyehyɛe a ɛwɔ hɔ dedaw no hyia ne ade a wɔtaa yɛ, a wɔtaa de ma sɛ kaad anaa fob mmom sen sɛ wɔde sticker bɛma. Matekiti, asɔremma, ne nsɛm a esisi, MIFARE ne nea wɔtaa fata, na adansedi krataa no taa yɛ anRFID nsateaa a wɔde kyekyere nsaanaa kaad mmom sen sɛ wɔde nkyerɛwde bɛhyɛ so. Maagyapade a wɔde hu nneɛma a ɛnyɛ den, NTAG213 taa yɛ nea ɛdɔɔso gye sɛ nhyehyɛe no hyɛ sɛ wɔmfa MIFARE chip pɔtee bi mma.

 

Bere a ɛnsɛ sɛ wode NTAG di dwuma, ne bere a ɛnsɛ sɛ wode MIFARE di dwuma

Kwati NTAG a wɔde di dwumabere a wuhia cryptographic kwan so tumidi, bo a wɔakora so anaa sikatua, multi-application managed credentials, anaa fine-grained backend kwan. Ɛno ne DESFire asasesin.

Kwati MIFARE, titiriw Classic, bere a botae no yɛ telefon a ɛyɛ mmerɛw, kɛse-kɛseɛ telefon tap-to-URL osuahu, bere a w’atiefo dodow no ara wɔ iPhones so na anka wode wo ho bɛto Classic sector akenkan so, anaa bere a wopɛ sɛ wonya ɛka a ɛba fam koraa ne encoding a ɛyɛ mmerɛw sen biara. Wɔ saa nsɛm no mu no NTAG yɛ ntɛmntɛm, ne bo nyɛ den, na wotumi hyɛ ho nkɔm.

 

Mfomso a wɔtaa di bere a worepaw NFC sticker ahorow no

1.  

2. MIFARE a wobɛpaw efisɛ ɛte sɛ nea ahobammɔ wom kɛse.

3. Chip no nkutoo mma ahobammɔ mma; wo nso wuhia safoa a wɔhwɛ so yiye, akenkanfo a ɛne ne ho hyia, ne akwan a wɔfa so kɔ hɔ ho mmara. DESFire nhyehyeɛ a wɔanhyehyɛ no yie no nyɛ ahobanbɔ nsen NTAG a wɔayɛ no yie.

4.  

5. UID a wode bedi dwuma sɛ anti-atoro atoro.

6. UID kyerɛ chip bi nanso ɛnkyerɛ sɛ ɛyɛ nokware. Sɛ wopɛ ahobammɔ ankasa a, fa chip a wɔayɛ ama cryptographic verification te sɛ NTAG424 DNA anaa DESFire di dwuma.

7.  

8. Sɛnea telefon ahorow yɛ wɔn ade no a wobebu wɔn ani agu so.

9. Sɛ adetɔfoɔ de wɔn ankasa mfiri bɛbɔ a, sɔ wo chip ne encoding hwɛ wɔ iOS ne Android nyinaa so ansa na woahyɛ bɔ sɛ wɔbɛyɛ production run.

10.  

11. Wo werɛ fi nneɛma a ɛwɔ soro no.

12. Adwumayɛ sesa wɔ plastic, ahwehwɛ, krataa, ne titiriw dade so, a ɛkame ayɛ sɛ bere nyinaa ɛhwehwɛ sɛ wɔde anti-dade NFC sticker a ferrite a wɔde ayɛ.

13.  

14. Paw chip no ansa na wode adi dwuma.

15. Fi ase fi nea ɔde di dwuma no adeyɛ ne nhyehyɛe no ahwehwɛde so, afei paw chip no, na ɛnyɛ ɔkwan foforo so.

 

Nneɛma, antenna, ne nea ɛwɔ soro, ne sɛnea wɔsɔ hwɛ

Chip no yɛ adwumayɛ fã bi kɛkɛ. Substrate, antenna kɛse, adhesive, surface, ne nneɛma a atwa yɛn ho ahyia nyinaa ho hia. Sticker formats a wɔtaa de di dwuma no bi ne krataa a wɔde yɛ ɔsatu a ɛho ka sua, PET ma ɛtra hɔ kyɛ, PVC ma nhyehyɛe, .epoxy a wɔde yɛ adwumasɛ wopɛ sɛ wowie a, anti-dade ma dadeɛ ani, ne amanne-a wɔatintim ama ahyɛnsodeɛ.

Sɛ́ nhwɛso a ɛkɔ so wɔ ɔkwan a ɛkɔ akyiri so no, antena kɛse ma tap a wotumi gyina ano ne baabi a wobetumi akɔ no tu mpɔn, bere a sticker ketewaa bi kenkan wɔ akyirikyiri tiaa. Anamɔn biako pɛ a ɛho hia sen biara ne sɛ wobɛsɔ ahwɛ wɔ ɔfasu ankasa so. Dade ne nsu ma antena no yɛ adwuma yiye, nkotoku a wɔabɔ no kurukuruwa ne ɛlɛtrɔnik mfiri nketewa sesa afuw no, na ɔhyew anaa nsu betumi aka sɛnea ɛbata ho. Ansa na wobɛyɛ pii no, di akenkan kwan ne ahotosoɔ a ɛwɔ wo adeɛ ankasa no so, ne wo fon anaa akenkanfoɔ a wode w’ani asi so ankasa, wɔ tebea a tag no bɛtena mu no mu Sɛ ɛkɔ dadeɛ so a, si so dua sɛ wɔayɛ anti-dadeɛ anaa wɔ-dadeɛ so wɔ berɛ a worefa nhwɛsoɔ mmom sen sɛ wode ahyɛdeɛ no akɔ akyi.

 

Pre-production nhwehwɛmu kratasin ma NFC sticker adetɔfo

Sɛ wo ne nea ɔde nneɛma ma wo no si saa nsɛm yi so dua ansa na woakra a, ɛmma wontumi ntintim ne afuw mu huammɔdi dodow no ara:

• Chip pɛpɛɛpɛ, ɛnyɛ "NTAG" anaa "MIFARE" nko ara: NTAG213 vs 215 vs 216 vs 424 DNA, anaasɛ MIFARE su pɔtee no.
• Ná ɛho hia sɛ wɔkae ade, a egyina wo NDEF nsɛm ne kyerɛwtohɔ dodow so.
• Blank anaa pre{0}}encoded, na sɛ wɔde pre-encoded a, emu nsɛm pɔtee ne kyerɛwtohɔ ahorow. Sɛ ɛsɛ sɛ emu nsɛm sesa akyiri yi a, bisa ho asɛmNFC tag ahorow a wotumi san kyerɛwne lock tebea no.
• UID nhyehyɛe, ne NTAG424 DNA ho no, sɛ ebia ɛsɛ sɛ wɔde UID ne tap counter bi hyɛ URL no mu de hwɛ sɛ ɛyɛ nokware anaa.
• Lock anaa kenkan-nkoto tebea, a ɛkyerɛ sɛ ebia wɔato tag no mu bere a wɔayɛ encode awie no.
• Passwords anaa keys a wɔde hyɛ muma NTAG anaa MIFARE fael ahorow a wɔabɔ ho ban.
• Anti-dade a wɔde yɛ ade, yiw anaa dabi, a egyina nea wɔde si so no so.
• Substrate, adhesive, ne kɛse, ne antenna, a ɛne saa asase ani ne nneɛma a atwa yɛn ho ahyia no hyia.
• Nhwɛsode sɔhwɛwɔ wo soro ne mfiri ahorow so, ansa na woatu mmirika koraa.
• Dodow ne bere a wɔde di dwuma, a MOQ ne amanneɛbɔ-tintim nhyehyɛe biara ka ho.

Wɔ amanne anaa kɛseɛ-volume project ho no, ɛboa ma yei nyinaa ne nea ɔyɛeɛ no hyia wɔ anim, sɛ nhwɛsoɔ no ɛnam anOEM ne ODMadeyɛ a ɛtow chip, encoding, ne nneɛma no mu ansa na wɔayɛ.

 

Nsɛm a wɔtaa bisa

 

So MIFARE sticker betumi ne iPhone ayɛ adwuma?

Egyina chip no so. MIFARE DESFire ne NTAG, a iPhones bu no sɛ standard NFC Forum tags no, wɔboa no yiye, nanso MIFARE Classic sector data no nyɛ nea wotumi kenkan no yiye wɔ iPhones so, enti wɔtaa de Classic di dwuma ne akenkanfo a wɔatu wɔn ho ama sen sɛ wɔde bedi dwuma wɔ telefon a wɔde di dwuma mu. Wɔ telefon-adwuma a edi kan ho no, NTAG ne nea wotumi hyɛ ho nkɔm sen biara.

 

So NTAG yɛ nea ahobammɔ wom?

Wɔayɛ standard NTAG21x chips ama nkitahodi a ɛbue na ɛma password a wopɛ nkutoo, a ɛnyɛ nokwaredi a emu yɛ den. Sɛ wo hia ahobanbɔ a, NTAG424 DNA de AES-128 ne tap-unique nkrasɛm a server betumi agye atom, a ɛyɛ den ankasa ma afiri no mu nokwaredi ka ho.

 

NFC sticker bɛn na eye ma anti-atoro atoro?

NTAG424 DNA ne nea ɛtaa fata yiye ma adetɔfo-a wɔrehyia ahyɛnsode ahobammɔ, efisɛ adetɔfo betumi de telefon a ɛnyɛ den ahwɛ sɛ ade bi yɛ nokware. MIFARE DESFire fata nsɛm a ɛho hia sɛ adansedi krataa a ahobammɔ wom koro no ara nso di akwan a wɔfa so nya anaasɛ wotua ho dwuma. UID nhwehwɛmu a ɛnyɛ den nyɛ anti-atoro.

 

So NTAG213 dɔɔso ma me URL no?

Wɔ URL biako ho no, ɛkame ayɛ sɛ bere nyinaa yiw, efisɛ link tiawa a wɔtaa de di dwuma no hyɛ NTAG213 no bɛyɛ baiti 144 a ɔde di dwuma no nkae mu yiye. Kɔ NTAG215 anaa NTAG216 sɛ wo hia NDEF kyerɛwtohɔ ahorow pii, URL tenten a ɛwɔ tracking parameters, anaasɛ headroom foforo a.

 

Dɛn nti na me NFC sticker no renkenkan wɔ dade bi so?

Metal detunes NFC antenna a wɔahyɛ da ayɛ no na ɛtwetwe afuw no, enti mpɛn pii no sticker a ɛyɛ ɔkwan biara so renkenkan bere a ɛbata dade ho no. Fa anti-metal NFC sticker a ferrite layer wom di dwuma, na si adwumayɛ so dua wɔ wo soro ankasa so bere a worefa nhwɛsode no.

 

So ɛsɛ sɛ mekra NFC sticker a ɛnyɛ hwee anaasɛ wɔadi kan -encoded?

Blank tags ma wo kwan a wode bɛkɔ encode wɔ-fie; pre-encoded tags ma bere sie wɔ scale nanso ɛhwehwɛ sɛ wobɛto emu nsɛm no mu na woakyerɛw ahorow no wɔ anim. Sɛ wopɛ dynamic content a, bisa tags a wotumi kyerɛw bio ne sɛ ebia wɔbɛto chip no mu bere a woayɛ encoding awie no.

 

Nea ɛwɔ asɛm no mu

Paw NTAG ma telefon-adwuma a edi kan te sɛ aguadi, nneɛma a wɔde kyekyere nneɛma a nyansa wom, nneɛma ho nsɛm, ne nkyerɛkyerɛmu a ɛnyɛ den, na paw MIFARE, mpɛn pii no DESFire, bere a sticker no yɛ nhyehyɛe a ahobammɔ wom a akenkanfo, nsafe, ne tumi krataa wom no fã. Sɛ wopɛ anti-atoro a, fa wo nsa ka NTAG424 DNA, anaa DESFire wɔ abɔdeɛ a nkwa wom kɛseɛ mu, na fa wo ho nto UID nhwehwɛmu nko ara so da. Siesie dwumadie asɛm no, fon-anaa-akenkanfoɔ kwan, ahobanbɔ gyinabea, nkaeɛ, ɔfasuo, ne ɛnne nne kane; chip, antenna, ne nneɛma a ɛfata di akyi fi saa mmuae ahorow no mu wɔ awosu mu.

Saa akwankyerɛ yi gyina nsa{0}}wɔ osuahu a ɛfa NFC sticker a wɔyɛ, encoding, ne pre{1}}sɔhwɛ wɔ NTAG ne MIFARE chip mmusua no nyinaa so, a mfiridwuma ho nsɛm a wɔatwe afiri NXP ne NFC Forum nkrataa mu.