Ɔkwan Bɛn so na Wobɛpaw RFID Mfiri?
Dec 15, 2025
Gyae nkrasɛm bi .
Ɔkwan Bɛn so na Wobɛpaw RFID Mfiri?
Nokwarem no, asɛmmisa yi brɛ yɛn.
Ɛnyɛ adetɔfo-brɛ ase wɔ asɛmmisa no ankasa ho. Efisɛ bere biara a ɛsɛ sɛ yebisa nsɛm pii san kɔ: Ɛhe na ɛsɛ sɛ wokenkan? Ɔkwan bɛn so na tag no rekɔ so? Wɔ dan mu anaa abɔnten? Dade biara a ɛbɛn hɔ? Nsu biara wɔ hɔ? Dɛn ne wo sikasɛm nhyehyɛe? So wuhia clone ahobammɔ?
Sɛ saa nsɛm yi nni hɔ a, "RFID mfiri bɛn na eye" yɛ nea wontumi mmua. Ɛte sɛ nea wobisa sɛ "kar bɛn na eye sen biara" a wonka sɛ ebia woreto mmofra akɔ sukuu anaasɛ woretwe nneɛma a wɔde fa ɔman no mu.
Frequency-nnipa dodow no ara nya eyi mfomso fi mfiase
Yɛayɛ nneɛma fi 2006. Yɛahu sɛ nnwuma pii wuwu esiane frequency selection nti.
Classic nhwɛso: adetɔfo pɛe sɛ wɔdi adekoradan mu nneɛma a wɔakora so akyi. Te UHF kenkan akyirikyiri, kɔɔ tẽẽ maa 860-960MHz. Deɛn na ɛsiiɛ? Ná anonne a wɔde ahyɛ toa mu ahyɛ n’adekoradan mu ma. UHF sɛnkyerɛnne nyaa absorbed by nsu, akenkan rates yɛ nwura. Eyi nyɛ quality issue-ɛyɛ physics. Nsu ne UHF ntumi nfrafra.
Flip side: yɛde FDX-B glass tube microchips ma Turkey mmoa akwahosan adwumakuw bi. Wɔayɛ adwuma abom mfe pii ni, bɛboro 300k units afe biara. Dɛn nti na wɔmfa UHF nni dwuma? Efisɛ chips kɔ mmoa were ase. 134.2kHz low frequency hyɛn abɔde a nkwa wom ntini mu. UHF ntumi nyɛ saa. ISO 11784/11785 atra hɔ mfe du du pii-ɛnyɛ sɛ obi paw no kwa nti, na mmom esiane sɛ saa frequency yi yɛ adwuma ankasa wɔ nipadua a nkwa wom so nti.
13.56MHz frequency a ɛkorɔn di access cards, transit, sikatua ho dwuma. Akenkan kwan a ɛtaa yɛ wɔ mita biako ase, a nokwarem no ɛyɛ ahobammɔ ade-wompɛ sɛ obi bɛkenkan wo kwan a wode kɔ hɔ no fi baabi a wɔde kar sisi no atifi.
Ahobammɔ Ho Kɔkɔbɔ
Nanso frequency security ne chip security yɛ nneɛma soronko. Wɔ afe 2008 mu no, nhwehwɛmufo a wɔwɔ Radboud Sukuupɔn Nijmegen mu no paapaee NXP Mifare Classic encryption no mu. Kaad bɛyɛ ɔpepepem biako na ɛkaa wiase nyinaa, a London Oyster nkrataa ka ho. NXP bɔɔ mmɔden sɛ wobesiw krataa no kwan; Dutch asennibea kae sɛ dabi. Kaad foforo de DESFire a AES-128 ka ho di dwuma mprempren, nanso akenkanfo a wɔagye din da so ara wɔ baabiara. Enti sɛ adetɔfo pɛ sɛ wɔhwɛ kwan a wɔfa so kɔ hɔ a, bere nyinaa yedi kan bisa sɛ: protocol bɛn na w’akenkanfo a ɔwɔ hɔ dedaw no boa?
Form factor ho hia sen sɛnea nkurɔfo susuw
Cards vs keyfobs-nnipa dodow no ara susuw sɛ ɛyɛ animhwɛ ara kwa. Ɛnyɛ saa.
Kaad kɔ sika kotoku mu. Sika kotoku wɔ sikakorabea nkrataa, ID nkrataa atwa ho ahyia, ebinom wɔ dade nhama. User waves wallet at reader, biribiara nsi, frɛ de nwiinwii sɛ card no abubu. Card no nsɛee-ɛyɛ shielded.
Keyfobs sɛn keyrings so. Ɔdefoɔ kura no tẽẽ wɔ akenkanfoɔ so. Ɔkenkan bere biara.
Yɛne France{0}}based access badge reproduction company ayɛ adwuma mfeɛ anum. Bɛyɛ 500k FUID keyfobs afe biara. Mfiase no na wɔpɛ sɛ wonya nkrataa. Wɔasesa no wɔ "kaad ntumi nyɛ adwuma" mmoa frɛ pii akyi. Anwiinwii dodow so tew ntɛm ara. Wɔmaa yɛsesaa nkuku no nso de wɔn ahyɛnsode soronko no na amma atoro a wɔbɛyɛ wɔ wɔn gua so no ano. Saa customization-aguadi nnwumakuw ntumi nyɛ. Wonni nkuku, nneɛma a wɔde asie nkutoo. Wohia RFID keyfob yɛfo ankasa ma nnwinnade nsakrae.
Nneɛma a wɔde yɛ adwuma nso ho hia. PVC bo yɛ mmerɛw nanso ɛpaapae wɔ flexing ne nnuru ase. Yɛwɔ Portugal adetɔfo bi a ɔreyɛ event management-boro ɔpepem biako wristbands afe biara a 100k+ cards ka ho. Wɔyɛ anadwo nhyiam ahorow, wohia UV fluorescent printing a ɛhyerɛn wɔ blacklight ase. Standard PVC tintim ntumi nni ho dwuma, ehia adeyɛ titiriw. Saa ahwehwɛde yi nso hia adwumayɛbea a ɛyɛ n’ankasa akwan horow.
Chip security-nnipa dodow no ara nni adwene biara
EM4100 kenkan-chips nkutoo? Kɔtɔ mfoninitwa afiri wɔ Taobao so gye dɔla aduonu, clone wɔ sikani mu. Fine ma adwinnade akyi di, ntadehoro ho nhyehyɛe. Sɛnea ɛbɛyɛ a wobetumi akɔ ɔpon ano? Aseresɛm. Yɛanya adetɔfoɔ a wɔaka sɛ "yɛn dan mu dan no de yei di dwuma." Nea metumi aka ara ne sɛ wo dan mu ahobammɔ yɛ agoruhwɛbea titiriw.
T5577 yɛ nea wotumi kyerɛw bio, ɛyɛ mmerɛw ma dev sɔhwɛ, nanso ahobammɔ mpo nye koraa sen EM4100 efisɛ kyerɛw akwanside no sua.
Sɛ wopɛ sɛ wohwɛ kwan a wɔfa so kɔ hɔ a, ɛsɛ sɛ sikatua-a ɛsua koraa no yɛ Mifare DESFire level. AES encryption, wɔn ho wɔn ho ahotoso. Ɛbɔ ka kɛse wɔ chip biara ho, nanso ahobammɔ yɛ nokware.
Ɛfa wɔn a wɔde nneɛma bɛma a wobenya ho
Saa ɔfa yi te sɛ self-som, nanso mɛka no ɔkwan biara so.
RFID adwumayɛkuw wɔ aguadi nnwumakuw pii dodo. Wɔnya fi Factory A nnɛ, Factory B ɔkyena, obiara a ne bo yɛ mmerɛw. Ebia wo batch a edi kan ne batch a ɛto so abien no befi adwumayɛbea ahorow a ɛsono emu biara koraa. Frequency consistency, aba dodow-no guarantee.
Yɛyɛ yɛn ankasa chip bonding, antenna winding, injection molding. Nneɛma anum a wɔyɛ, ne nyinaa wɔ yɛn Hunan adwumayɛbea. Auburn Suapɔn RFID Lab ayɛ ARC adansedie firi afe 2009. Walmart, Costco hwehwɛ ARC-adansedie tags-esiane sɛ nnwuma no su gu ahodoɔ kɛseɛ nti, ɛhia sɛ obi hwɛ sɛ ɛyɛ nokware.
Tajikistan adwumayɛkuo bi nya amanne kwan so kaad bɛyɛ ɔpepem 2 fi yɛn hɔ afe biara ma sikakorabea-toɔ, amanneɛbɔ, nneɛma a wɔde di dwuma, 250+ nnwuma. Nnwuma a ɛwɔ saa gyinabea yi wɔ akontaabu bere a kaad ahorow di nkogu no. Wɔrenkɔ source randomly mfi aguadi adwumakuw bi hɔ.
RFID keyfob adwumayɛbea a ɛhwɛ n’ankasa nneɛma a wɔyɛ so no betumi ama awerɛhyem sɛ ɛbɛyɛ nea ɛkɔ so pɛpɛɛpɛ. Aguadifo ntumi nyɛ saa.
Awiei koraa no, ɛfa ɛka ho
Mma nhwɛ unit bo kɛkɛ.
Tag bo a ɛba fam nanso huammɔdi dodow a ɛkɔ soro kyerɛ sɛ woresoma nnipa akɔ sait ahorow so sɛ wɔmfa wɔn nsi ananmu-ɛno ne ɛka ankasa. Kɔtɔ akenkanfo a ne bo yɛ mmerɛw, firmware updates ntumi mmoa akyiri yi, sesa bio, ne bo yɛ den mpo. Middleware charging per transaction, bills nya hu bere a volume ramps.
Bere a Inditex de RFID too gua wɔ Zara sotɔɔ ahorow nyinaa mu wɔ afe 2016 mu no, Wall Street Journal bɔɔ amanneɛ sɛ wɔtɔɔ chips ɔpepem 500. Pablo Isla frɛɛ no “nsakrae a ɛho hia sen biara wɔ sɛnea sotɔɔ ahorow yɛ adwuma mu no mu biako.” Dɛn nti na wɔsɛee saa sika no? Efisɛ wobuu ɛka a wɔbɔ nyinaa ho akontaa. Sɛ wonya mfiri a wɔpaw no yiye a, ɛmma wonsɛe sika pii wɔ nsu no ase sen sɛnea wɔbɔ ka ansa na woayɛ no.
Ntease koro no ara fa nnwuma nketewa ho. Nya no yiye, po so hyɛn a ɛkɔ ntɛmntɛm. Nya no bɔne, tiyɛ daa.
Ɛno ne yɛn take. Woanya adwuma pɔtee bi a wobɛka ho asɛm?
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