EM Card nyob rau hauv Kev Tswj Xyuas: Hom, Kev Ruaj Ntseg & Yuav Xaiv Li Cas (2026)
May 14, 2026
Tso lus
Daim npav 125kHz uas tseem ua haujlwm ntau lub tsev
Taug kev mus rau hauv nruab nrab- nce chaw ua haujlwm hauv tsev, thaj chaw nyob, lossis chaw ua lag luam, thiab muaj feem yuav yog cov ntawv nkag mus rau cov neeg xauj tsev nqa hauv lawv lub hnab nyiaj ua haujlwm ntawm 125kHz. Cov no yog EM phaib, cov ntawv pov thawj sib thooj ua rau ntawm EM4100 lossis TK4100 chipset, thiab lawv tseem yog lub qhov rooj siv dav tshaj plaws - nkag mus siv thev naus laus zis hauv ntiaj teb. Tshaj li 73% ntawm cov koom haum thoob ntiaj teb tso siab rau qee hom RFID-raws li kev tswj hwm (Daim Ntawv Qhia Txog Kev Loj Hlob), thiab ib qho tseem ceeb ntawm qhov kev teeb tsa no tseem khiav ntawm EM thev naus laus zis los ntawm 2000s thaum ntxov.
Daim npav EM yog passive, nyeem - tsuas yog RFID daim ntawv pov thawj. Nws nqa 64-ntsis cim cim (UID) mus tas li hlawv rau hauv nti ntawm lub hoobkas. Tsis muaj roj teeb sab hauv. Thaum daim npav nkag mus rau hauv electromagnetic teb ntawm tus nyeem ntawv sib xws, feem ntau nyob rau hauv 2 mus rau 15 cm, lub teb energizes ib tug tooj liab kav hlau txais xov coil embedded nyob rau hauv daim ntawv, thiab cov nti xa nws UID ntawm Manchester-encoded modulation. Tus nyeem ntawv ntes tus lej ntawd, xa mus rau tus tswj lub qhov rooj, thiab tus tswj xyuas nws tawm tsam cov ntaub ntawv los txiav txim seb lub xauv qhib. Pab pawg muag khoom nrhiav ib qhoem4100 daim npav rau qhov rooj nkagfeem ntau yog saib raws nraim qhov nti no, lossis nws tus pin-compatible clone, TK4100.
Lub cev, tus qauv EM daim npav sib thooj ua raws li ISO 7810 ID-1 qhov ntev (85.5 mm × 54 mm × 0.76 mm) thiab yog tsim los ntawm PVC, ABS, lossis PET nyob ntawm qhov yuav tsum tau ua. Kev khiav hauj lwm kub ntawm -20℃mus rau 50 degree. Rau kev nkag siab tob txog yuav ua li cas RFID chips khaws thiab xa cov ntaub ntawv ntawm qib raws tu qauv, Syntek's technical overview npog lubteeb liab thiab encoding hauv paus.
Daim npav EM ua haujlwm li cas hauv Kev Tswj Xyuas Kev Nkag Mus?
Txhua daim npav nkag mus tswj kev sib cuam tshuam ua raws tib lub teeb liab saw: daim npav → nyeem ntawv → tswj → database → hluav taws xob xauv. Lub EM daim npav nyeem ntawv rau kev nkag mus tswj tawm cov UID ntes tau siv lubWiegand 26-ntsis raws tu qauv, ib xyoo caum- qub interface uas tau dhau los ua tus txheej txheem xaim hluav taws xob hauv kev lag luam nkag. Wiegand 26-ntsis muab EM phaib txawv tshaj plaw nyeem ntawv sib raug zoo: yuav luag txhua tus tswj kev nkag ntawm lub khw yuav txais nws.
Vim tias Wiegand 26-ntsis payload yog tus lej tiaj tus, tsis muaj tus lej zais uas tsis muaj kev kuaj xyuas qhov tseeb, txhua yam khoom siv uas tuaj yeem cuam tshuam cov teeb liab ntawm tus nyeem ntawv thiab tus maub los tuaj yeem rov ua daim ntawv pov thawj ntawd. Qhov qhib uas ua rau 125kHz tshuab yooj yim rau kev xa tawm yog tib yam khoom uas ua rau lawv yooj yim rau kev sib haum xeeb.
Cov xwm txheej xa tawm uas EM-raws li cov kab ke tseem ceeb suav nrog cov rooj vag hauv zej zog, cov chaw nres tsheb qhov chaw nres tsheb, lub sijhawm ua haujlwm hauv pem teb- cov chaw tuaj koom, thiab cov qhov rooj sab hauv nruab nrab hauv cov tsev kawm ntawv loj. Rau cov duab dav dav ntawm yuav ua li cas RFID thev naus laus zis haum rau kev nkag mus rau niaj hnub architectures, Syntek qhov kev taw qhia rau RFID nkag mus tswj maps tawm tag nrho cov ecosystem.
EM Card vs. IC Card vs. CPU Card: Dab tsi tiag tiag txawv
Feem ntau cov ntawv sib piv nteg tawm lub rooj feature thiab txav mus. Lub rooj muaj txiaj ntsig, tab sis qhov cuam tshuam kev yuav khoom tiag tiag zaum hauv qab nws.
| Dimension | Daim npav ID (EM Card) | IC Card (Mifare) | CPU Card |
|---|---|---|---|
| Ntau zaus | 125 kHz | 13.56 MHz | 13.56 MHz |
| Nco | 64-ntsis UID, nyeem nkaus xwb | 1–4 KB, nyeem-sau | 8–64 KB+, nyeem-sau nrog OS |
| Encryption | Tsis muaj | CRYPTO1 (Classic) / AES (DESFire) | AES-128/256, on-card crypto cav |
| Cloning kuj | Tsis muaj - cloned hauv vib nas this | Tsawg (Classic) rau siab (DESFire EV3) | Siab heev - mutual authentication |
| Ntau-application | Ib leeg muaj nuj nqi | Nruab nrab (kev nkag + kev tuaj koom) | Tag nrho (kev nkag, kev them nyiaj, tus kheej) |
| Unit nqi (bulk) | $0.08–$0.15 | $0.30–$1.20 | $1.50–$5.00+ |
| Tej yam siv | Basic qhov rooj nkag, chaw nres tsheb | Kev nkag mus rau chaw ua haujlwm, daim npav hauv tsev kawm ntawv | Tsoom Fwv Teb Chaws ID, banking, transit |
Tus nqi ntau raws li Syntek tus nqi txiav txim ntau ntawm 10, 000+ chav tsev ntim; Tus nqi tiag tiag sib txawv raws li chip variant, luam ntawv, thiab encoding yuav tsum tau.
Qhov tseem ceeb sib txawv ntawmib daim npav em thiab daim npav Mifaretsis yog tus lej zaus xwb. Nws yog qhov sib txawv ntawm daim ntawv pov thawj uas tshaj tawm cov xov tooj ruaj khov rau txhua tus neeg mloog thiab daim ntawv pov thawj uas tuaj yeem cam tus nyeem ntawv los ua pov thawj nws tus kheej ua ntej sib qhia cov ntaub ntawv. Nyob nruab nrab ntawm daim npav IC thiab daim npav CPU, qhov leap yog los ntawm cov haujlwm - theem kev tiv thaiv tseem ceeb mus rau tag nrho ntawm - daim npav kev khiav hauj lwm muaj peev xwm khiav cryptographic applets, tib lub tuam tsev uas ruaj ntseg cov npav hauv txhab nyiaj thiab daim npav ID hauv tebchaws.
Qhov Tseeb Kev Ruaj Ntseg Txog EM Daim Npav: Feem ntau Cov Qhia Tawm Tawm
Ntawm no yog qhov feem ntau cov ntsiab lus kev kawm nres ntawm "EM daim npav tuaj yeem luam tau" thiab txav mus. Qhov tseeb yog qhov tshwj xeeb dua, thiab qhov tshwj xeeb tseem ceeb rau leej twg txiav txim siab yuav khoom lossis hloov kho dua tshiab.
Daim npav EM4100 xa nws UID hauv qhov tseeb, tsis muaj kev lees paub kev tuav tes, txhua zaus nws nkag mus rau qhov chaw nyeem ntawv. Cov kws tshawb fawb txog kev ruaj ntseg tau ua pov thawj ua haujlwm clones tsim nyob rau hauv qis dua 30 vib nas this siv RFID thev naus laus zis uas raug nqi tsawg dua $ 20 (Tus kws tshawb fawb kev ruaj ntseg). Xyoo 2013, tus kws tshawb fawb ntawm Npis Sov Fox tau tsim ib qho Arduino-raws li 125kHz nyeem ntawv- tus kws sau ntawv los ua pov thawj tiasem4100 rfid daim npav kev ruaj ntsegyog, hauv cov ntsiab lus siv tau, sib npaug rau kev luam ntawv barcode (Kisi).
Tab sis qhov kev pheej hmoo txuas ntxiv dhau ib tus neeg qiv daim npav rau ib feeb. Kev tshawb fawb kev kawm tau pom tias siab - lub kav hlau txais xov hluav taws xob teeb tsa tuaj yeem nyeem 125kHz EM daim npav UID los ntawm qhov deb mus txog 3 meters, zoo tshaj tus neeg tuav daim npav paub tias lawv daim ntawv pov thawj raug ntes (MDPI Technologies). Qhov ntawd ua rau "daim npav hauv koj lub hnab ris" tub sab tub nyiag yog qhov tseeb tawm tsam vector, tsis yog qhov theoretical.
Ntawm no yog ib feem uas cov neeg muag khoom feem ntau -cov ntawv sau yuav tsis qhia rau koj: kev hloov kho dua tshiab los ntawm EM mus rau Mifare Classic tsis daws qhov teeb meem. Mifare Classic's CRYPTO1 cipher tau kawm tiav ntau xyoo dhau los, thiab qhib- cov cuab yeej siv (MFOC, MFCUK) tuaj yeem tawg cov yuam sij ntawm ib daim npav sib cuam tshuam. Cov neeg siv khoom siv zoo li Flipper Zero tau coj Mifare Classic cloning rau hauv thaj chaw nyiam nyiam. Txoj kev txhim kho kev ruaj ntseg tiag tiag ua rauMifare DESfire EV2 lossis EV3, uas siv AES -128 encryption thiab kev sib koom ua pov thawj, ib qho qauv kev ruaj ntseg sib txawv. Nyob rau hauv ib tug neeg muag khoom-coj tswj kev xa mus kuaj, ib lub tuam txhab European kev ruaj ntseg tshuab tau tshaj tawm tias encrypted ntse daim ntawv deployments txo daim card cloning xwm txheej los ntawm 96% (Daim Ntawv Qhia Txog Kev Loj Hlob).
Qhov kev sib txawv no tseem ceeb vim tias pawg neeg yuav khoom nquag pom zoo pob nyiaj siv rau "Mifare upgrade" yam tsis tau hais txog Mifare variant. Tus nqi sib txawv ntawm Mifare Classic thiab DESFire EV3 daim ntawv pov thawj yog kwv yees li 3-5 × (raws li Syntek tus nqi tsim khoom ntawm ntim), thiab qhov sib txawv ntawm kev ruaj ntseg yog qhov sib txawv ntawm "sib cais nrog cov cuab yeej dawb" thiab "tsis siv sij hawm tawg nrog txoj kev tam sim no."
Thaum 125kHz EM Daim Npav Tseem Ceeb - thiab Thaum Lawv Tsis Ua
Tshem tawm EM thev naus laus zis tag nrho yuav tsis muaj txiaj ntsig zoo li tsis quav ntsej nws cov kev txwv. Muaj cov xwm txheej raug cai uas a125khz em daim npav sib thoojtseem yog qhov kev xaiv raug, thiab paub txog ciam teb tiv thaiv ob qho tib si dhau - kev siv nyiaj thiab hauv qab - tiv thaiv.
EM phaib tseem muaj kev tiv thaiv rau lub qhov rooj sab hauv nruab nrab hauv ib puag ncig qhov chaw ib puag ncig twb tau ruaj ntseg los ntawm qib siab dua - cov ntawv pov thawj qib siab lossis biometrics, xws li lub txee rau khoom sab hauv hauv DESFire- cov chaw ua haujlwm tiv thaiv. Lawv kuj haum rau cov peev nyiaj- txwv tsis pub xa mus rau qhov chaw uas cov cuab yeej tiv thaiv tsis tshua muaj nqi hloov pauv thiab cov qauv kev hem thawj tsis suav nrog kev cuam tshuam lub cev: cov chav ua si hauv zej zog, tsis yog- thaj chaw rhiab warehouse, lub sij hawm yooj yim- tuaj koom qhov twg daim npav tau ua ke nrog tus lej PIN rau ob qho - cov ntaub ntawv pov thawj.
EM phaib nres ua qhov kev txiav txim siab thaum lub sijhawm lub chaw tswj xyuas cov ntaub ntawv tswj hwm, cov cuab yeej nyiaj txiag, cov khoom muag tshuaj, lossis ib qho khoom vaj khoom tsev uas muaj kev cuam tshuam ua rau muaj kev cuam tshuam rau kev ua raws cai. Cov chaw khaws ntaub ntawv, cov chaw lag luam nyiaj txiag, kev khaws tshuaj kho mob, thiab tsoomfwv kev teeb tsa yuav tsum tsis txhob cia siab rau cov ntawv pov thawj uas tuaj yeem luam tawm nrog $ 15 ntaus ntawv los ntawm kev lag luam online.
Ib qho xwm txheej uas ntes cov koom haum tawm ntawm tus neeg saib xyuas yog tsim kev xa mus. Thaum lub tuam txhab tswj hwm vaj tse yuav dhau ib lub tsev, cov ntaub ntawv nkag mus yuav luag tsis tau tshawb xyuas rau hom ntawv pov thawj technology. Cov ntaub ntawv xa mus feem ntau sau tag nrho daim npav kom muaj nuj nqis, 500 phaib, 200 nquag, tab sis tsis yog qauv chip lossis kev ua haujlwm zaus. Cov txheej txheem lees paub kuaj seb txhua lub qhov rooj qhib, tsis yog tias daim ntawv pov thawj tom qab nws raug encrypted lossis tshaj tawm cov UID ruaj khov hauv qhov tseeb. Qhov sib txawv no zaum hauv thaj tsam grey ntawm tus thawj tswj vaj huam sib luag tuaj thiab tus neeg ua haujlwm kev ruaj ntseg outsourced, txhua sab xav tias lwm tus tau txheeb xyuas tias daim npav tiag tiag yog dab tsi. Ob lub tsev uas siv tib lub npe ntawm cov cuab yeej nyeem ntawv yuav khiav cov cuab yeej sib txawv ntawm daim npav, ib qho kev ruaj ntseg, ib qho tsis tseem ceeb, thiab qhov sib txawv yog pom yam tsis muaj kev sim tshuaj xyuas (ACS Ltd).
Qhov twg Access Control Card Market tab tom mus
Daim npav thoob ntiaj teb-raws li kev tswj hwm kev lag luam muaj nqis kwv yees li $ 5.75 nphom hauv 2025 thiab kwv yees kom ncav cuag $ 7.84 nphom los ntawm 2030, loj hlob ntawm 6.4% CAGR (Mordor txawj ntse). Hauv kev lag luam ntawd, RFID thiab NFC thev naus laus zis suav nrog 57.75% ntawm kev nkag mus tswj kev sib txuas (Mordor txawj ntse). thiab contactless nyeem ntawv xa tawm tau nce 38% ntawm 2022 thiab 2024.
Txoj kev siv tshuab tsiv teb tsaws chaw khiav ntawm EM mus rau Mifare Classic mus rau Mifare DESFire mus rau cov ntaub ntawv pov thawj mobile, txhua kauj ruam nce qib cryptographic. Kev tswj hwm lub sijhawm nrawm nrawm nrawm: EU's NIS2 cov lus qhia, piv txwv li, txuas ntxiv cybersecurity lub luag haujlwm rau kev nkag mus rau lub cev hauv cov haujlwm tseem ceeb, ua rau cov ntaub ntawv pov thawj qhov rooj tsis muaj qhov sib txawv, tsis yog kev nyiam kev nyab xeeb xwb. Kev dhia los ntawm DESFire EV2 mus rau EV3 zoo li me me ntawm daim ntawv, tib AES -128 core, tab sis hauv kev xa tawm ua haujlwm ntau txhiab kev hloov pauv txhua hnub, qhov sib txawv ntawm kev tiv thaiv kev rov ua dua tshiab thiab kev lag luam nrawm txiav txim siab seb koj qhov rollout stalls ntawm qib nyeem ntawv firmware lossis khiav huv si.
Rau cov koom haum nruab nrab- tsiv teb tsaws, dual- nyeem ntawv zaus (125kHz + 13.56}MHz) yog tus qauv hloov pauv. Lawv tso cai rau cov ntawv qub qub EM thiab daim npav ntse tshiab los koom ua ke ntawm tib tus nyeem ntawv thaum lub sijhawm ua tiav. Kev ceeb toom ua haujlwm ntawm no yog tias 125kHz channel tseem ua haujlwm thoob plaws lub sijhawm hloov pauv, uas txhais tau hais tias txo qis kev tawm tsam, nthuav tawm daim npav cloned EM kom hla dhau qhov kev lees paub tshiab, yog ua tau kom txog rau thaum cov kab ke qub txeeg qub teg txhob txwm ua tsis taus (ICT). Hauv kev xyaum, sau 125kHz channel deactivation rau hauv daim ntawv cog lus tsiv teb tsaws chaw raws li qhov tseem ceeb ntawm kev xa tuaj nrog hnub teem tseg, tsis yog daim ntawv npaj uas tau ncua sij hawm txhua lub hlis twg thaum ib daim npav qub tseem tsis tau hloov pauv.
Yuav Ua Li Cas Xaiv Daim Npav Tswj Xyuas Txoj Cai rau Koj Qhov Haujlwm
Ntau dua li teev cov qauv kev xaiv dav dav, ntawm no yog qhov kev txiav txim siab ib ntus uas, hla 17 xyoo ntawm kev tsim cov ntaub ntawv pov thawj RFID hauv 3,600 m² chaw khiav 5 cov kab ntau lawm ntawm 100, 000+ phaib ib hnub, peb tau pom tsis tu ncua ua qhov kev khuv xim tsawg tshaj plaws:
- Pib nrog tus qauv hem, tsis yog pob nyiaj siv.Qhia seb yuav ua li cas yog tias daim ntawv pov thawj raug muab luam tawm thiab siv los ntawm tus neeg tsis tau tso cai. Yog tias qhov tshwm sim yog ib tus neeg nkag mus rau chav tsev gym, EM yog qhov zoo. Yog tias qhov tshwm sim yog nkag mus rau lub server khib lossis lub tsev muag tshuaj, hla EM thiab Mifare Classic nkaus. Mus ncaj qha rau DESFire EV2 / EV3 lossis CPU phaib.
- Tom qab ntawd xyuas qhov system compatibility.Yog tias cov tswj kev nkag mus uas twb muaj lawm tsuas yog lees txais Wiegand 26- cov tswv yim me ntsis thiab cov peev nyiaj tsis tso cai hloov pauv, daim npav em rau kev tswj xyuas yuav yog qhov kev xaiv tsuas yog luv luv -, tab sis ua ke nrog lwm yam tseem ceeb (PIN, biometric) thiab sau nws raws li qhov kev pheej hmoo paub nrog 12-24 lub hlis tswj hwm hloov lub hom phiaj, tsis yog qhov qhib-kawg tiag tiag.
- Tom qab ntawd, thiab tsuas yog tom qab ntawd, tham txog tus nqi tsev.Covrau - daim npav nqi sib txawv ntawm EM thiab DESFireyog tiag tiag ($0.10 vs. $1.50+ ntawm ntim, raws li Syntek tus nqi ntau), tab sis nws yog ib qho yuam kev sib npaug tiv thaiv tus nqi ntawm re-pab ib lub tsev tag nrho tom qab muaj teeb meem kev nyab xeeb lossis kev soj ntsuam xyuas kev ua raws cai.
Qhov yuam kev loj tshaj plaws ntawm kev yuav khoom, los ntawm qhov tseem ceeb, yog qhia "Mifare card" ntawm kev yuav khoom yam tsis tau hais txog Classic lossis DESFire, qhov kev sib txawv uas txiav txim siab seb daim npav puas tuaj yeem cloned nrog $ 30 cov neeg siv khoom siv lossis xav tau kev siv dag zog cryptographic tshaj li ib qho kev tawm tsam kev tawm tsam. Lwm yam yuam kev rov tshwm sim: tsis meej pem EM4100 (nyeem-tsuas yog, kho UID) nrog T5577 (rewritable, lub nti tau siv hauv cov khoom siv cloning); thiab overlooking nyeem ntawv firmware yuav tsum tau thaum tsiv ntawm 125kHz mus rau 13.56MHz systems.
Yog tias koj qhov project xav tau kev cai - luam tawm EM, Mifare, lossis DESFire cov ntaub ntawv pov thawj nrog cov txheej txheem nti tshwj xeeb, Syntek'sRFID daim npav khoom kabnpog tag nrho ntau yam los ntawm cov ntawv teev lus dawb mus rau tag nrho cov ntawv pov thawj kev cai.
FAQ: Feem ntau cov lus nug txog EM Cards hauv Access Control
Q: Daim npav EM yog dab tsi thiab nws ua haujlwm li cas?
A: Daim npav EM yog 125kHz passive RFID qhov sib thooj daim npav nqa lub Hoobkas - programmed, nyeem -tsuas yog UID ntawm EM4100 lossis TK4100 nti. Tus nyeem ntawv lub zog ua rau daim npav tus kav hlau txais xov, ua rau UID xa mus rau kev txheeb xyuas cov ntaub ntawv.
Q: EM daim npav puas tuaj yeem cloned?
A: Yog. EM phaib xa ib daim ID ruaj khov yam tsis muaj encryption, thiab ua haujlwm clones tuaj yeem tsim nyob rau hauv vib nas this nrog pheej yig handheld tshuab luam ntawv.
Q: Qhov txawv ntawm daim npav EM thiab daim npav Mifare yog dab tsi?
A: EM phaib yog 125kHz, nyeem-tsuas yog, tsis muaj ntaub ntawv pov thawj rau kev nkag tau yooj yim. Mifare phaib ua haujlwm ntawm 13.56MHz nrog nyeem- sau lub cim xeeb thiab kev txhawb nqa encryption, ua kom muaj kev nyab xeeb thiab siv ntau- daim ntawv thov.
Q: Puas yog daim npav EM tseem siv dav?
A: Yog. Lawv cov nqi qis, kev sib raug zoo dav dav, thiab kev xa tawm yooj yim ua rau lawv tseem ceeb hauv tus nqi -rhiab thiab qis- ib puag ncig kev nyab xeeb thoob ntiaj teb.
Q: Thaum twg kuv yuav tsum hloov kho los ntawm EM phaib mus rau daim npav ntse?
A: Thaum koj lub chaw saib xyuas cov ntaub ntawv rhiab heev, xav tau kev soj ntsuam, lossis yuav tsum ua raws li cov qauv kev cai. Target DESfire EV2/EV3 nrog AES encryption, tsis yog Mifare Classic.
Rau cov khoom specifications los yog kev cai daim npav configurations, ncav cuag los ntawmSyntek's RFID daim npav nug nplooj ntawv.
Xa kev nug