Antoy NFC Tag?
Dec 26, 2025
Mangiter na mensahe .
Antoy NFC Tag?
Nayarin anengneng mo la iratan ya angkekelag ya sticker ed saray restawran nen kaplesan. Diad China et ibabaga ran "Tap to Order." Ipeket mo so teleponom, ompaway so menu, tan man-order kay naakan. Anggapoy na-download ya app. Anggapoy QR code scanning. NFC itan.
NFC taget sakey a passive RF chip ya walay antenna to. Anggapoy baterya ed loob. Say electromagnetic field na teleponom so mamabiskeg ed satan no asingger ka la. Say chip et ombangon, ipawil toy antokaman ya data ya insimpen to, tan nagawaan so amin ed loob na 100 milliseconds.
Say parte ya nalilingo na karaklan
Say NFC et RFID. Diad espisipiko et high-frequency RFID ed 13.56 MHz ya walay pigaran ekstran features ya aka-bolt. No walay mantepet no kasin mangusar na NFC o RFID, aliwa so tepet da. Say peteg a tepet et no dinan a frequency band so matukoy ed use case.
UHF RFID
Say UHF RFID ed 860-960 MHz et makapan-scan na nilibon tag manlapud pigaran metro so kaarawi to. Maong parad imbentaryo na bodega. Gagawaen iya na Zara ed 6,000 a tindaan. Balet ag nabasa na teleponom iray UHF tags. Kaukolan moy dedikadon hardware.
NFC
Say NFC et mankikimey ed saray telepono. Masulok ya 94% na saray smartphone ya ipawit nen 2024 et walay NFC ya aka-built in. Saya so punto. Saray aplikasyon ya akaarap ed saray manbabakal ya labay mon mitongtong iray totoo ya uusaren iray kagawaan ya wala lad sikara.
Ipaliwawa ko no panon ya talagan onkikiwas so pangiyalis na pakayari
Diad saya et magmaliw ya makapainteres manlapud punto de bista na inhinyero.
Say NFC et mankikimey ed 13.56 MHz ya mangiter ed sika na wavelength ya manga 22 metros. Say komunikasyon et nagagawa ed manga 5 sentimetro. Mas antikey itan nen say sakey a wavelength kanian wala ka ed asingger a -field ya rehyon. Lingwanan so nipaakar ed ikakayat na electromagnetic wave. Say importante dia et say pankakasakey na magnetic field ed baetan na duaran coil ya singa air-core transformer.
Say antena na telepono et manggagawa na alternating magnetic field. Say tag antenna et walad satan a lawak. Say panguman na magnetic flux ed tag coil et mamawala na boltahe. Say rectifier circuit ed chip et manguuman ed AC ya magmaliw ya DC. Manpabiskeg so chip.
Panag-ani na Enerhiya
Inkuan na NXP ya saray chips da et makaani na manga 15 milliwatts manlapud sayan proseso. Magenap la pian napaandar so lohika tan nabasa/nasulat ed memorya.
Load Modulation
Say data et ompawil panamegley na load modulation. Say tag et manguuman so impedance na antenna to ya mamapawala na ripples ed kaplesan ya waveform na antenna na telepono. Nadecode na telepono iratan ya ripples. Say standard rate et 106 kbps. Wala ray chips ya 848 kbps.
Say pampili na chip et no iner so itatalona odino ag-ontalona na saray proyekto
Labay koy mangusar na panaon ed saya ta dakel lay anengneng kon proyekto ya manpipili na lingon chip.
Say NFC Forum et mangiiter na kabaliksan ed saray klase na tag. Say Type 1 et inekal nen 2021. Say Type 3 et say FeliCa ya importante labat ed Japan. Say Type 5 et parad andukey a panag-scan ya anggad 1.5 metros balet say seguridad et manunan tuloy. Parad karaklan ya aplikasyon na konsumidor, say pilien mo et Type 2 tan Type 4.
Tipo 2: Say Workhorse
NTAG213, NTAG215, NTAG216
Say Type 2 et mankabaliksan na NTAG series manlapud NXP. NTAG213, NTAG215, NTAG216. Pareho so pamilya na chip balet nanduruma so kabaleg na memorya.
Memory Reality
Nia so anggapoy mangibaga ed sika anggad agmo abasa a maong so datasheet. Say memorya et aka-organisa ed 4-byte iran pahina. Say NTAG213 et walay 45 ya pahina to. Balet agmo nausar ya amin iratan. Say pahina 0 anggad 2 et data na manggagawa tan UID. Say pahina 3 et say Capability Container. Say pahina 4 anggad 39 et memorya na manguusar. Saya et 36 a pahina tan 4 a byte et mipara ed 144 a byte ya nayarian mon isulat.
Say 888 bytes ya in-advertise parad NTAG216? Pareho so dagup na pahina balet kayari mon ibawas so overhead et nawalaan kay 222 ya usaren a pahina ya walay 4 bytes na kada sakey.
Manunan Seguridad
Say proteksion na password et manguusar na AUTH0 register pian nadetermina no dinan ya address na pahina so kaukolan ya authenticate. I-set mo ed FFh tan say proteksion et na-disable. I-set mo ya abeba tan kada access ed tagey na satan ya pahina et kaukolan toy 32-bit ya password. Wala met so AUTHLIM ya mangi-lock ed chip kayari na dakel ya lingon pansagpot. Nayarin i-configure manlapud 0 anggad 7 ya pansali.
Say NFC counter et talagan mausar parad anti-cloning. 24-bit counter ya auto-on-increment ed kada matalonan panagbasa. Sarag mon i-mirror iyan balor ed NDEF URL mo pian nanengneng na saray backend server so rolling number. No walay man-clone ed tag mo, say counter et ag makapipara ed iilaloan na server.
Sakey a bengatla so amasakit ed sikami ed sakey a proyekto nen imbeneg a taon. Labay na kliyente so NTAG216 parad "headroom." Say aktual ya payload et 70 bytes. Nayarin usaren so NTAG213 ed kapaldua na bili. Balet say talagan problema et say kabaleg na antenna. Saray angkakabaleg ya memory chip et agmankaukolan na angkakabaleg iran antenna balet ta aka-spec kami na mas angkakabaleg ya tag format ya iilaloan min panoen so espasyo. Nansumpal ed ag nakaukolan a gastos ed BOM tan saray komplikasyon ed imbentaryo. Nengnengen mo nin unona so aktual ya data ya kaukolan mo.
Say Type 4 et duma so arkitektura to
Say NTAG424 DNA so sankaimportantian dia. Common Criteria EAL4 certified. Manguusar na ISO 7816-4 ya file system structure imbes ya flat page memory. 416 bytes ya inorganisa bilang Capability Container tan NDEF file tan Proprietary file.
Say modelo na seguridad et sigpot a duma. AES-128 encryption. LRP mode parad side-channel attack resistance. Taloran-pass ya mutual authentication. Say SUN message authentication et manggagawa na one-time URLs ya walay CMAC signatures. Kada tap et makapawala na nikadkaduman cryptographic token.
Luho ya Usaren
Saray luho iran tatak so manguusar ed saya a maong. Say LVMH, Prada, Cartier et nanggawa na Aura consortium nen 2021 parad authentication na produkto. Masulok ya 70 milyon ya produkto so nirehistro nen 2025 unong ed site da. Say Louis Vuitton et anengneng dan inmabeba na 30% so peke iran reklamo kayari na impan-deploy. Agko na-verify itan ya espisipikon bilang manlapud saray manunan lapuan kanian ipasen ya singa nireport.
Panagsungdo
Say write endurance ed NTAG424 DNA et 200,000 cycles kumpara ed 100,000 parad NTAG21x. Say pangisimpen na data et 50 taon kumpara ed 10 taon. Saraya so importante parad saray aplikasyon ed industriya ya saray tag et mabetbet ya isulat lamet.
Arkitektura
ISO 7816-4 file system. SUN message authentication. Taloran-pass ya pankakasakey. Nikadkaduman cryptographic token kada tap.
Say problema ed metal
Saya so naynay ya onlelesa. Walay malabay ya mangiyan na NFC tags ed saray produkton metal tan adiskobre ton ag-iratan onkikiwas.
Say nagagawa et say metal et onkiwas bilang konduktor ed manguuman ya magnetic field. Ganggan nen Faraday. Saray eddy current et manporma ed loob na metal tan manggagawa na onsusumpan magnetic field unong ed ganggan nen Lenz. Onbaba so inductance na antenna yo. Q-factor tanks. Say resonant frequency et onarawi manlapud 13.56 MHz. Say distansya na babasaen et anggad zero.
Say estandarten solusyon et say ferrite sheet ed baetan na antenna tan metal. Say ferrite et onsesegep tan mangipawil ed magnetic flux. Nabawi yo so pigaran inductance tan onggapon mankimey lamet so antenna.
PASAKBAY
Balet nia so ag-ipapabitar na saray product sheet. Makatulong so Ferrite balet kaukolan mo nin siansia ya i-re-tune so matching network mo. Sakey a proyekton nankimeyan mi et say distansya na pakadetektaan so inmepas manlapud 80mm ed plastik ya anggad 30mm ed ferrite ed metal. Kayari na impan-re-match ed impedance et pinmawil kami ed 61mm. Aliwan singa ka-maong na plastik balet ta mausar.
No mandedesinyo ka parad saray metal ya kaliberliber, manbadyet ka na panaon parad saray paulit-ulit ya pananguman. Kaukolan moy VNA odino LCR meter. Say NXP et walay antenna design tool to balet saray output values et gapoan aliwan sampot ya ebat.
Say katuaan na pankakasakey na telepono
Android Ecosystem
Say Android et makaaro ed NFC manlapu la nen inmuna. Say HCE ed Android 4.4 et mangiiter na pankanawnawa ed saray app ya man-emulate na saray card ya anggapoy secure ya element hardware. Say panagbasa/pansulat et onkikiwas ed antokaman ya Android phone ya walay NFC to.
Say Apple Lag
Say Apple so problema ed loob na dakel a taon. Say iPhone 6 et walay NFC to nen 2014 balet ta aka-lock ed Apple Pay. Say iOS 11 nen 2017 et angiyabuloy na pambasa na NDEF data. inyarum na iOS 13 so pansulat. Limitado ni ed foreground ya operasyon ed saray daan lan kagawaan.
Say Turning Point (2024)
Nen Agosto 2024, in-anunsyo na Apple so pangilukas na NFC chip access ed saray third-party developers ya onggapo ed iOS 18.1. Makabkabaliksan iya. Saray bangko tan managlako et makapanggawa na sarili dan payment apps natan. Say unonan daluyon et sakopen toy US, UK, Japan, Australia tan pigaran bansa.
Diad praktis, say kabaliksan na saya et nayarian mon isipen ya maslak ya manguusar et sarag dan i-tap iray NFC tag antokaman so plataporma na telepono. Duaran taon lay apalabas et kaukolan min ipaliwawa iray limitasyon na iOS ed kada proyekto. Asumpal la itan ya tongtongan.
Maples ya nota ed saray estandarte
ISO/IEC 14443
Say ISO/IEC 14443 et mansaklaw ed saray smart card ya anggapoy kontak. Type A tan Type B modulation schemes. Saya so pundasyon na Type 2 tan Type 4 ya tag.
ISO/IEC 18092
Say ISO/IEC 18092 et NFCIP-1, say protocol na komunikasyon na kagawaan. Say kaplesan ya bersion et 2023.
ISO/IEC 15693
Say ISO/IEC 15693 et saray vicinity card ya inusar na Type 5.
NFC Forum
Say NFC Forum et mangipapaway na saray detalye na implementasyon ed tapew na saraya. Saray kabaliksan na klase na tag, format na NDEF, klase na rekord. Naala ya amin ed nfc-forum.org.
Say Release 15 et pinmaway nen Hunyo 2025 tan pinalaknab toy sertipikadon distansya na komunikasyon manlapud 0.5cm anggad 2cm. Gawaen ton ag tanton mairap so panag-align.
Kanian antoy NFC tag
Passive RF device. Napapaandar na electromagnetic coupling ed 13.56 MHz. Mantipon na data ed standardized NDEF format. Nabasa na anggan dinan ya smartphone ya walay NFC-. Say memorya et manlapud samploran byte anggad ngalngalin sakey kilobyte depende ed chip. Say seguridad et manlapud manunan proteksion na password anggad AES-128 ya walay cryptographic authentication.
Pilien so Type 2 NTAG21x parad saray aplikasyon na konsumidor ya sensitibo ed gastos. Pilien so Type 4 NTAG424 DNA no kaukolan moy tuan seguridad. Ikonsidera so metal ya makaamper ed mekanikal a desinyo. Subok ed saray aktual ya target ya telepono aliwan diad saray dev board labat.
Saya so praktikal a sumaryo.
Ipawit so Pantepet