Aluminium Foil RFID Kutsekereza Sleeves Ntchito ndi Kugwiritsa Ntchito

 

Momwe Sleeve ya Aluminium Foil Imatchingira Zizindikiro za RFID

 

Khadi likakhala mkati mwa mpanda wa conductive, mpanda umakhala ngati aFaraday khola. Chosanjikiza cha aluminiyamu chimayang'ana ndikuyamwa gawo lamagetsi lamagetsi lomwe wowerenga wakunja amatha kugwiritsa ntchito kupatsa mphamvu chipangizo cha RFID. Palibe munda ufika chip, palibe deta kusiya khadi.

 

Izi zimagwira ntchito chifukwakuya kwa khungu, makulidwe a kondakitala ofunikira kuti achepetse chizindikiro ndi pafupifupi 63%. Pa 13.56 MHz, kuchuluka kwa makadi olipira a NFC ndi zidziwitso zamakono zamakono, kuya kwa khungu la aluminiyamu ndi pafupifupi 0.018 mm. Chojambula chokhazikika chakhitchini chimakhala chokhuthala pafupifupi 0.016 mm. Pafupi ndithu.Makhadi oteteza{0}}makadi amalondathirirani zojambulazo pakati pa mapepala kapena zigawo za polima ndipo nthawi zambiri zimadutsa kukuya kwa khungu limodzi la aluminiyamu, zomwe zimatsitsa chizindikiro pansi pa chigawo cha owerenga 13.56 MHz.

Kufunsa kumodzi komwe timalandira pafupipafupi ku Syntek kukuwonetsa chisokonezocho. Woyang'anira malo amapempha RFID-kutsekereza mabaji kwa antchito 200, kutchula "RFID blocking" osatchula pafupipafupi. Tikufunsani owerenga omwe amagwiritsa ntchito nyumba yawo. Pafupifupi theka la nthawi, yankho limakhala HID ProxPoint kapena dongosolo lofanana la 125 kHz. Pamenepo tiyenera kukhala achindunji: athuthumba la khadi la aluminium zojambulazoidavotera 13.56 MHz ndi pamwambapa. Idzateteza makadi olipirira a NFC, -mapasipoti, ndi mbiri yanzeru ya HF moyenera. Sichidzapereka chitetezo chodalirika cha mabaji oyandikira a 125 kHz. Ngati makina anu ali ndi mphamvu ya 125 kHz, mufunika zinthu zambiri-zophatikiza zinthu zambiri{8}}zopangidwira kuti zichepetse-mafupipafupi, ndipo ili ndi gulu lina lazinthu zomwe zili ndi mitengo yosiyana.

Ma Sleeve a Passive Shielding vs. Makhadi Oletsa Ogwira Ntchito: Omwe Amagwirizana ndi Kutumiza kwa Bizinesi

 

Magulu awiri azogulitsa amalowa pansi pa "RFID blocking," koma makinawa alibe chilichonse chofanana. Kuwasokoneza pakugula ndi kulakwitsa kosavuta komwe kumakula moyipa.

 

Vutoli limawonekera m'malo-makadi ambiri. Makhadi a jamming amatha kukhala pafupifupi 2 cm kuchokera pamwamba pake. Ikani khadi lolowera, khadi yolipirira, ndi khadi yaulendo mu chotengera chomwecho, ndipo jammer sangafikire zonse zitatu. Zokambirana pamabwalo achitetezo a Hardware, kuphatikiza ulusi watsatanetsatane wa 2025 pa bolodi lagulu la Linus Tech Tips, adalembapo milandu yomwe khadi limodzi lowonjezera pakati pa jammer ndi chidziwitso chomwe mukufuna kupangitsa kuti jammer alephere. Mamembala a Dangerous Things Forum apendanso izi ndi mbiri ya HID iClass.

 

Manja ongokhala amachotsa kusinthako. Mwina khadi ili mkati mwa mpanda wa conductive kapena ayi. Mutha kutsimikizira kufalikira powonekera, ndipo mutha kuyesa mumasekondi khumi: ikani khadilo, gwirani dzanja la owerenga anu. Ngati wowerenga sangazindikire khadi, dzanja limagwira ntchito.

 

Pamapulogalamu amabaji amabizinesi, manja amapambana pakudziwiratu: mutha kuwapatsa antchito 300 ndikudziwa kuti aliyense amagwira ntchito mofanana. Makhadi a Jamming ndi othandiza kwambiri pakugwiritsa ntchito chikwama chamunthu, pomwe kuyika ndi kuchotsa makhadi m'manja kumakhala kotopetsa.

 

Syntek imapanga zopanda pakeRFID siginecha{0}}yoletsa malondam'njira zonse ziwiri-zachikhono ndi pasipoti-zonyamula. Pakali pano sitipanga makhadi a jamming.

 

Chiwopsezo Cha Makhadi Ofikira Amene Alipodi

 

Dumphani gawoli ngati mukudziwa kale kusiyana pakati pa chinyengo cholipirira popanda kulumikizana ndi kupanga makhadi. Ngati zinthu ziwirizo zikumveka ngati vuto lomwelo, pitirizani kuwerenga.

Ngakhale mbiri yachitetezo cha HID yapamwamba kwambiri-yomwe ilipo, Seos, ili ndi zofooka zolembedwa. Pepala la 2023 lofalitsidwa kudzera ku International Association for Cryptologic Research (IACR ePrint 2023/450, Sam Haskins ndi Trevor Stevado) linasonyeza kuukira kwa HID Seos pogwiritsa ntchito malonda--pashelufu ya hardware kuphatikizapo Proxmark3 RDV4. Kuwukiraku kunagwiritsa ntchito intaneti ngati msana wolumikizirana, wokhala ndi ma node awiri olumikizidwa: imodzi yoyikidwa pafupi ndi khadi yovomerezeka, ina pafupi ndi omwe amawerenga. Ofufuzawo adatsegula chitseko mu labu yawo pomwe khadi lovomerezeka linali pafupifupi 1,960 km. Kuwukirako kunafunikira pasanathe mphindi imodzi yapafupi ndi khadi, zomwe zimamveka bwino muofesi yolandirira alendo kapena pamalo oimika magalimoto.

 

Manja otchinga a RFID samakonza kubisa kosweka. Zomwe zimachita ndikuchotsa zenera loyandikira. Ngati chitsimikizirocho chili mkati mwa mpanda wa Faraday nthawi zonse pamene sichikuperekedwa kwa owerenga, wowukira sangathe kuyambitsa katsatidwe kakubwereza kapena kufananiza koyambirira. Kwa mabungwe omwe ali ndi mabaji otengera nthawi yomwe amawonjezedwa m'zaka, uku ndiye njira yotsika kwambiri-yotsika mtengo yomwe ilipo.

 

Kuti mumve zambiri za momwe ukadaulo wa RFID umagwirira ntchito tsiku ndi tsiku, onani mwachidulentchito wamba RFID m'mafakitale.

 

 

Kumene Zovomerezeka-Zovala Zachitetezo Zakhala Zakale Zokhazikika

 

Sikuti bungwe lililonse limachita izi ngati zosankha.

Zomwe Mukufuna Kwanu Muyenera Kunena Musanavomereze Wopereka

 

Masamba ambiri ogulitsa sangakupatseni zomwe mukufunikira kuti mupange chisankho. Nawa mafunso asanu omwe muyenera kufunsa musanavomereze zopempha zachitsanzo.

 

 

Specification Point	Zofunikira Zambiri
1. Gulu lotetezedwa pafupipafupi	Adanenedwa ngati nambala. "Ma blocks RFID" sizomwe zimatchulidwa. Muyenera kuwona "13.56 MHz," "125 kHz," kapena "pawiri-mafupipafupi".Manja wamba a Syntek adavotera 13.56 MHz (HF/NFC).
2. Kapangidwe kazinthu	Funsani kuti conductive layer imapangidwa ndi chiyani. Kupanga kwa Syntek: Kunja kwa mapepala okutidwa, zotchinga za aluminiyamu zotchinga, mkati mwafilimu ya PE. Zosalowa madzi komanso zong'ambika-.
3. Dimensional fit	Manja ayenera kukhala ndi miyeso ya ISO/IEC 7810 ID-1 (85.6 × 53.98 mm). Makulidwe amtundu wa Syntek: 88 × 59 mm pamakhadi, 140 × 97 mamilimita pamapasipoti.
4. Kutsegula kwa manja akuya	Khola la Faraday limagwira ntchito pokhapokha likamalizidwa. Kutsegula kosaya kosiya m'mphepete mwa mlongoti wa khadi pakuwonekera kumapangitsa owerenga amphamvu kuti agwirizane ndi chip.
5. MOQ & Nthawi Yotsogolera	Zitsanzo zaulere (wogula amalipira kutumiza), zidutswa za MOQ 500 za manja osavala, 1,000 zamtundu-zosindikizidwa. Nthawi yotsogolera 7 mpaka 15 bizinesi. Malipiro kudzera pa PayPal, T/T, kapena Alibaba.

 

Zomwe Sleeve Iyi Imachita Ndipo Salowa M'malo

 

Sichibisa deta. Sichimatsimikizira ogwiritsa ntchito. Sichikukweza protocol ya khadi lanu la cholowa. Ngati makina anu olowera akugwiritsa ntchito MIFARE Classic, mkono sungapangitse kuti kubisako kusweka.

 

Zomwe zimachita ndikuchotsa zenera. Masekondi khumi ndi asanu wantchito wanu akudutsa m'galaja yoyimitsira magalimoto ndi baji yosatetezedwa yotsekedwa pa lamba wawo? Apa ndipamene kuwukira kwa relay kumayamba. Nkhono imatseka mpatawo. Pa-mtengo wake uli pansi pa dola imodzi, kutumiza sikufuna kusintha kwazinthu, ndipo kumatheka ndi mtengo wogula kamodzi. Kwa woyang'anira malo omwe amadziwa kukweza kwa makhadi ndi maulendo atatu a bajeti, ndiye mlatho wololera.

 

Syntek imapereka zitsanzo zaulere-zopangidwa kuti muthe kuyesa pogwiritsa ntchito baji yanu yeniyeni musanawonjezere voliyumu. Titumizireni kuchuluka kwa makadi, kuchuluka kwake, ndi zofunikira zilizonse zosindikiza. Tidzatsimikizira kugwirizana ndikutumiza chitsanzo mkati mwa masiku.