Aluminium Foil RFID Blocking Tes Tsho Muaj nuj nqi thiab daim ntawv thov
Apr 24, 2026
Tso lus
Xov tooj cua zaus txheeb xyuas chips zaum hauv yuav luag txhua yam koj cov neeg ua haujlwm nqa mus rau hauv lub tsev txhua tag kis: nkag mus rau cov paib, daim npav them nyiaj, e-passports, passports. Ib qho txhuas ntawv ci RFID thaiv lub tes tsho qhwv ib ncig ntawm cov ntawv pov thawj nrog cov txheej txheem uas txwv cov neeg nyeem sab nraud los ntawm lub zog ntawm lub nti. Lub tswv yim yooj yim, dav dav, thiab tsis tshua muaj - qhia.
Qhov teeb meem tsis yog seb cov tes tsho no puas ua haujlwm. Qhov teeb meem yog tias feem ntau cov npe khoom tsis qhia kojuas frequencieslawv thaiv, thiab feem ntau pawg neeg yuav khoom tsis nug. Lub tes tsho ntsuas rau daim npav them nyiaj tsis muaj kev tiv thaiv yuav tsis tas yuav tiv thaiv daim paib sib ze uas koj cov neeg ua haujlwm siv nkag mus hauv lub tsev. Kab lus no piav qhia txog physics tom qab qhov sib txawv, taug kev los ntawm cov ntawv thov uas teeb liab - thaiv daim npav tiv thaiv twb yog tus qauv teeb meem, thiab muab rau koj daim ntawv ntsuam xyuas tus neeg muag khoom nrog cov lus qhia tshwj xeeb uas koj tuaj yeem luam rau hauv koj lub RFQ tom ntej.
Yuav ua li cas Aluminium Ntawv Nyiaj Lub Tes Tsho Blocks RFID Signals
Thaum ib daim npav zaum hauv ib lub hnab ntim khoom, lub hnab ntim khoom ua haujlwm zoo liFaraday tawb. Cov txheej txheej txhuas cuam tshuam thiab nqus cov electromagnetic teb uas ib tus neeg nyeem sab nraud feem ntau siv los ua lub zog RFID nti. Tsis muaj teb mus txog lub nti, tsis muaj ntaub ntawv tawm hauv daim npav.
Qhov no ua haujlwm vimdaim tawv nqaij tob, lub thickness ntawm tus neeg xyuas pib xav tau los ua kom lub teeb liab los ntawm kwv yees li 63%. Ntawm 13.56 MHz, kev khiav hauj lwm zaus ntawm NFC daim npav them nyiaj thiab cov ntawv pov thawj ntse niaj hnub feem ntau, txhuas cov tawv nqaij qhov tob yog kwv yees li 0.018 hli. Txheem chav ua noj ntawv ci sau txog 0.016 hli tuab. Kaw txaus.Daim npav lag luam- lub tsho tiv thaivlaminate no ntawv ci ntawm daim ntawv los yog polymer txheej thiab feem ntau tshaj ib daim tawv nqaij qhov tob ntawm txhuas, uas tee lub teeb liab hauv qab lub coupling pib ntawm tus qauv 13.56 MHz nyeem.
Physics Gap: 13.56 MHz vs 125 kHz
Qhov kev suav ntawd hloov ntawm 125 kHz. Qhov qis zaus no tseem siv los ntawmHID Prox, Indala, thiab lwm yam kab ke sib xwstau teeb tsa thoob plaws ntau txhiab lub tuam txhab lag luam thoob ntiaj teb. Ntawm 125 kHz, daim tawv nqaij qhov tob ntawm txhuas nce mus txog 0.23 hli, ntau tshaj kaum plaub npaug ntawm cov ntawv ci hauv tsev. Tus qauv txhuas- lub tes tsho sib xyaw ntawm qhov zaus no muab tsawg dua ib qho ntawm daim tawv nqaij qhov tob ntawm attenuation. Daim npav sab hauv tseem tuaj yeem nyeem tau.
Ib qho kev nug peb tau txais tsis tu ncua ntawm Syntek qhia txog qhov tsis meej pem. Tus neeg saib xyuas chaw thov RFID- thaiv cov neeg tuav pov hwm rau 200 tus neeg ua haujlwm, qhia txog "RFID thaiv" yam tsis tau hais txog zaus. Peb nug tus nyeem ntawv tus qauv uas lawv lub tsev siv. Txog ib nrab ntawm lub sijhawm, cov lus teb hloov mus ua HID ProxPoint lossis zoo sib xws 125 kHz system. Thaum ntawd peb yuav tsum ncaj qha: pebaluminium foil card lub tes tshoyog ntsuas rau 13.56 MHz thiab siab dua. Nws yuav tiv thaiv NFC daim npav them nyiaj, e-passports, thiab HF cov ntawv pov thawj ntse zoo. Nws yuav tsis muab kev tiv thaiv kev ruaj ntseg rau 125 kHz cov paib sib thooj. Yog tias koj lub kaw lus khiav ntawm 125 kHz, koj xav tau ntau- txheej txheej conductive composite lub hom phiaj- ua rau qis- zaus attenuation, thiab qhov ntawd yog cov khoom sib txawv nrog cov nqi sib txawv.
Ib lub tes tsho uas tsis phim koj cov cim ntau zaus yog qhov phem tshaj qhov tsis muaj lub tes tsho.
Passive Shielding Tes Tsho vs. Active Blocking Cards: Uas Fits Enterprise Deployment
Ob pawg khoom tau lumped nyob rau hauv "RFID thaiv," tab sis cov txheej txheem yuav luag tsis muaj dab tsi zoo sib xws. Ua rau lawv tsis meej pem ntawm kev yuav khoom yog qhov yuam kev yooj yim uas ntsuas qhov tsis zoo.
Kev tiv thaiv Passive
A passive teeb liab- thaiv lub tes tshoyog Faraday enclosure. Daim npav nkag mus, cov khoom siv hluav taws xob thaiv qhov chaw, daim npav nyob twj ywm nyeem tsis tau txog thaum koj rub tawm. Tsis muaj hluav taws xob. Tib hom kev ua tsis tiav yog txhua yam: qhov qhib hnav tawm, lossis lub tes tsho tsis npog daim npav lub kav hlau txais xov.
Active Jamming
Active jamming cardsua hauj lwm qhov opposite. Lawv zaum ib sab ntawm koj daim ntawv pov thawj thiab, thaum lawv pom ib tus neeg nyeem daim teb, kos lub zog parasitic los ntawm nws kom tso tawm lub txee -cim. Xav txog nws li kev sib ntaus sib tua nrog xov tooj cua. Qhov teeb meem tshwm sim hauv ntau - daim npav ib puag ncig.
Qhov teeb meem tshwm sim hauv ntau -daim npav ib puag ncig. Daim npav jamming qhov ua tau zoo yog li 2 cm ntawm nws qhov chaw. Muab ib daim npav nkag, daim npav them nyiaj, thiab daim npav thauj mus los hauv tib lub tuav, thiab lub jammer yuav tsis ncav cuag tag nrho peb. Kev sib tham ntawm cov rooj sib tham txog kev ruaj ntseg kho vajtse, suav nrog cov ncauj lus kom ntxaws 2025 ntawm Linus Tech Tips pawg thawj coj hauv zej zog, tau sau cov ntaub ntawv uas ib daim npav ntxiv ntawm jammer thiab lub hom phiaj kev lees paub ua rau lub jammer ua tsis tiav. Dangerous Things Forum cov tswv cuab tau tshawb nrhiav qhov no ntxiv nrog HID iClass daim ntawv pov thawj.
Lub tes tsho passive tshem tawm qhov sib txawv ntawd. Txawm hais tias daim npav yog nyob rau hauv cov khoom siv hluav taws xob lossis nws tsis yog. Koj tuaj yeem txheeb xyuas qhov pom ntawm qhov pom, thiab koj tuaj yeem sim nws hauv kaum vib nas this: muab daim npav tso rau hauv, tuav lub tes tsho tiv thaiv koj tus nyeem ntawv. Yog tias tus nyeem ntawv tsis tuaj yeem ntes daim npav, lub tes tsho ua haujlwm.
Rau kev lag luam cov ntawv cim npe, lub tes tsho yeej ntawm kev kwv yees: koj tuaj yeem muab lawv tawm rau 300 tus neeg ua haujlwm thiab paub tias txhua tus ua haujlwm ib yam. Jamming phaib yog qhov ua tau zoo dua rau kev siv lub hnab nyiaj tus kheej, qhov twg ntxig thiab tshem daim npav ntawm tus kheej lub tes tsho tau nrawm nrawm.
Syntek manufactures passiveRFID teeb liab- thaiv cov khoomnyob rau hauv ob daim npav - tes tsho thiab phau ntawv hla tebchaws - tus tuav hom. Peb tsis tam sim no tsim cov active jamming cards.
Daim Ntawv Ceeb Toom Txog Kev Nkag Mus Uas Muaj Tseeb
Hla ntu no yog tias koj twb paub qhov txawv ntawm contactless them nyiaj dag thiab nkag mus rau daim npav cloning. Yog tias ob yam no zoo li qhov teeb meem tib yam, nyeem ntxiv.
Contactless Payment Cards
Tsim ib qho -time cryptographic token nrog txhua tus kais. Captured nruab nrab - huab cua, lub token tsis muaj txiaj ntsig rau kev hloov pauv thib ob. Visa tau tshaj tawm rau pej xeem hu ua kev dag ntxias los ntawm kev sib cuag tsis zoo tsis zoo li thiab txwv tsis pub muaj kev txwv. RFID kev them nyiaj skimming tsis yog ib qho kev hem thawj rau cov neeg siv khoom. Rau cov ntawv them nyiaj, lub tes tsho thaiv yog kev thaj yeeb ntawm lub siab. Tsis muaj kev ruaj ntseg.
Enterprise Access Badges
HID Prox phaib (125 kHz) xa cov ntawv pov thawj zoo li qub uas tsis muaj kev nkag mus. MIFARE Classic (13.56 MHz) siv CRYPTO1 encryption tawg nyob rau hauv 2008. Txawm hais tias paub qhov tsis zoo, lawv tseem siv tau thoob ntiaj teb vim tias kev hloov kho tshiab yog peev- hnyav. Qhov no ua rau lub qhov rais tsis muaj kev cuam tshuam ntau xyoo dhau los.
Txawm tias HID tam sim no siab tshaj - daim ntawv pov thawj kev nyab xeeb, Seos, muaj cov ntaub ntawv tsis muaj zog. Ib daim ntawv 2023 tau tshaj tawm los ntawm International Association for Cryptologic Research (IACR ePrint 2023/450, Sam Haskins thiab Trevor Stevado) tau qhia txog kev tawm tsam tawm tsam HID Seos siv kev lag luam tawm -- txee kho vajtse suav nrog Proxmark3 RDV4. Qhov kev tawm tsam tau siv internet raws li lub pob txha rov qab, nrog ob qhov sib koom ua ke: ib qho muab tso rau ze ntawm daim npav raug cai, ib qho ze ntawm lub hom phiaj nyeem ntawv. Cov kws tshawb fawb tau qhib lub qhov rooj hauv lawv qhov chaw kuaj mob thaum daim npav tso cai nyob ze li ntawm 1,960 km deb. Qhov kev tawm tsam yuav tsum muaj nyob rau hauv ib feeb ntawm qhov xwm txheej sib thooj rau daim npav, qhov xwm txheej tshwm sim hauv ib qho chaw ua haujlwm sib koom lossis chaw nres tsheb of elevator.
Lub RFID thaiv lub tes tsho tsis txhim kho kev sib tsoo tawg. Qhov nws ua yog tshem tawm qhov sib thooj qhov rai. Yog tias daim ntawv pov thawj nyob hauv Faraday enclosure thaum twg nws tsis tau nthuav tawm rau tus nyeem ntawv, tus neeg tawm tsam tsis tuaj yeem pib relay lossis cloning ib ntus hauv thawj qhov chaw. Rau cov koom haum uas khiav cov cuab yeej cuab tam cuab yeej cuab tam nrog kev hloov kho ncua sij hawm ntsuas hauv xyoo, qhov no yog qhov qis tshaj - tus nqi ntsuas lub cev muaj.
Yog xav paub ntxiv txog yuav ua li cas RFID thev naus laus zis cuam tshuam nrog kev ua haujlwm niaj hnub, saib peb cov ntsiab lus ntawmCov ntawv thov RFID ntau thoob plaws hauv kev lag luam.
Qhov twg daim ntawv pov thawj-Cov tsho tiv thaiv twb yog qhov teeb meem txheem
Tsis yog txhua lub koom haum saib xyuas cov no raws li kev xaiv.
Tsoom Fwv Teb Chaws Asmeskas (FIPS 201 / PIV Cards).
Raws li Lub Tsev Haujlwm Saib Xyuas Kev Ruaj Ntseg Hauv Lub Tebchaws Thawj Tswj Hwm 12, tsoomfwv cov koomhaum tau pib tshaj tawm daim npav pov thawj Tus Kheej hauv xyoo 2006.FIPS 201 tus qauvAmeslikas xav kom cov koom haum muab "electromagnetically opaque tes tsho" nrog rau txhua daim ntawv pov thawj PIV. Tshaj li 5 lab daim npav PIV tau muab tawm txij li qhov kev pab cuam tau pib, raws li NIST cov ntaub ntawv. Lub Ib Hlis Ntuj xyoo 2022 hloov tshiab (FIPS 201-3) txo qis kev sim ua raws cai rau daim ntawv pov thawj nws tus kheej, tshem lub tes tsho los ntawm cov ntawv pov thawj. Cov koom haum tseem tab tom nrhiav thiab faib rau lawv, vim tias kev ua haujlwm ruaj ntseg tsis tau hloov pauv vim tias cov ntaub ntawv tau ua.
Department of Defense (CAC Cards).
Tib logic, cov ceg txheem ntseeg siab dua. Electromagnetically opaque lub tes tsho yog ib qho ntawm thawj cov khoom ntxiv ntxiv rau GSA Pom Zoo Cov Khoom Muag hauv qab FIPS 201. Yog tias koj tau taug kev los ntawm DoD chaw, koj tau pom lub tes tsho. Lawv zoo li tus qauv lanyard.
Corporate Physical Security Programs.
Cov koom haum hauv kev pabcuam nyiaj txiag, kev kho mob, thiab kev cog lus tiv thaiv tau koom ua keRFID thaiv lub tes tshorau hauv cov khoom siv ntawv pov thawj ntawm cov neeg ua haujlwm raws li cov txheej txheem onboarding. Cov qauv kev yuav khoom ib txwm yog ib qho kev txiav txim ntau ntawm 50 rau 500+ units, hloov tshiab txhua xyoo nrog rau lwm cov ntaub ntawv ua raws li kev ruaj ntseg.
Branded Promotional thiab Event Kits.
88 × 59 mm yog kwv yees li qhov loj ntawm daim npav lag luam, uas ua rau kev cai - luam daim npav lub tes tsho ib qho txiaj ntsig ntawm cov khoom lag luam uas tib neeg khaws cia. Cov koom haum sablaj, pawg tsev so, thiab cov koom haum khoom plig siv lub tes tsho luam tawm ua haujlwm pub dawb. Syntek txhawb nqa puv -xim CMYK thiab Pantone luam ntawv ntawm ob daim npav - hom thiabpassport- hom ntawv tes tsho. Cov ntaub ntawv kos duab tuaj yeem xa hauv AI, CDR, PDF, lossis siab - cov duab daws teeb meem (300 dpi yam tsawg kawg nkaus).
Yam Koj Yuav Tsum Paub Txog Spec yuav tsum hais ua ntej koj pom zoo rau tus neeg muag khoom
Feem ntau cov nplooj ntawv cov khoom yuav tsis muab qhov koj xav tau los txiav txim siab. Nov yog tsib nqe lus nug uas tsim nyog nug ua ntej koj pom zoo ib daim ntawv thov.
| Specification Point | Xav Paub meej |
|---|---|
| 1. shielded zaus band | Qhia ua tus lej. "Blocks RFID" tsis yog qhov tshwj xeeb. Koj yuav tsum pom "13.56 MHz," "125 kHz," lossis "dual-frequency".Syntek tus qauv tes tsho yog ntsuas rau 13.56 MHz (HF / NFC). |
| 2. Cov khoom muaj pes tsawg leeg | Nug seb cov txheej txheem conductive yog dab tsi. Syntek kev tsim kho: coated ntawv sab nrauv, aluminium foil shielding txheej, PE zaj duab xis sab hauv. Waterproof thiab tsim kua muag -resistant. |
| 3. Dimensional haum | Lub tes tsho yuav tsum ua raws li ISO / IEC 7810 ID-1 qhov ntev (85.6 × 53.98 mm). Syntek standard sizes: 88 × 59 mm rau daim npav, 140 × 97 mm rau daim ntawv hla tebchaws. |
| 4. Lub tes tsho qhib qhov tob | Lub tawb Faraday ua haujlwm tsuas yog thaum ua tiav. Ib qho qhib qhib tawm sab saum toj ntawm daim npav tus kav hlau txais xov nthuav tawm yuav ua rau cov neeg nyeem muaj zog ua ke nrog cov nti. |
| 5. MOQ & Lub sijhawm ua haujlwm | Cov qauv dawb (tus neeg yuav khoom them tus nqi thauj khoom), MOQ 500 daim rau lub tes tsho dawb, 1,000 rau kev cai- luam tawm. Lub sij hawm xa tuaj 7 mus rau 15 hnub ua haujlwm. Kev them nyiaj ntawm PayPal, T / T, lossis Alibaba. |
Lub tes tsho no ua dab tsi thiab tsis hloov
Nws tsis encrypt cov ntaub ntawv. Nws tsis authenticate cov neeg siv. Nws tsis hloov kho koj daim npav qub txeeg qub teg raws tu qauv. Yog tias koj qhov kev tswj hwm kev nkag mus tau ua haujlwm MIFARE Classic, lub tes tsho yuav tsis ua rau qhov kev nkag mus tsis muaj qhov tawg.
Qhov nws ua yog tshem lub qhov rais. Lub kaum tsib vib nas this koj cov neeg ua haujlwm taug kev los ntawm qhov chaw nres tsheb nrog ib daim ntawv tsis muaj ntaub thaiv npog rau lawv txoj siv? Qhov ntawd yog thaum pib relay nres. Lub tes tsho kaw qhov sib txawv. Ib -unit nqi yog nyob rau hauv ib duas, xa mus yuav tsum tsis muaj kev hloov infrastructure, thiab nws scales nrog ib tug purchase. Rau ib tus neeg saib xyuas qhov chaw uas paub txog daim npav hloov kho yog peb txoj kev siv nyiaj mus deb, uas yog tus choj tsim nyog.
Syntek muab pub dawb ua ntej - cov qauv tsim tawm kom koj tuaj yeem sim tawm tsam koj cov kab ke tiag tiag ua ntej cog lus rau ntim. Xa peb daim npav zaus, kwv yees kom muaj nuj nqis, thiab txhua yam kev cai luam ntawv. Peb yuav paub meej tias compatibility thiab xa cov qauv hauv hnub.
Syntek Smart Technology Co., Ltd.
RFID/NFC cim npe, phaib, wristbands, thiab teeb liab - thaiv cov khoom. Factory- tus nqi ncaj qha, kev cai luam ntawv, thiab cov qauv tsim nyog pub dawb.
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