Yog lawm, aluminium ntawv ci tuaj yeem thaiv cov cim RFID. Nws ua raws li kev cuam tshuam kev cuam tshuam uas cuam tshuam lossis nqus cov xov tooj cua siv rau kev sib txuas lus RFID.
Vim Li Cas Nws Ua Haujlwm
RFID systems siv xov tooj cua zaus electromagnetic teb los xa cov ntaub ntawv ntawm ib lub cim thiab tus nyeem ntawv. Aluminium ntawv ci, ua cov hlau conductive, tsim dab tsi yog qhov tseem ceebmini Faraday tawbnyob ib ncig ntawm txhua yam nws npog. Lub tawb no thaiv lossis ua rau lub zog hluav taws xob tsis muaj zog, tiv thaiv RFID nti los ntawm kev sib txuas lus nrog tus nyeem ntawv.
Nws siv tau li cas?
Aluminium ntawv tuaj yeem txo RFID nyeem ntau yam, tab sis nws cov txiaj ntsig yog nyob ntawm ntau yam:
| Qhov xwm txheej | Kev cuam tshuam rau kev ua tau zoo |
|---|---|
| Wrapping zoo | Npog, qhov, los yog xoob folds txo qhov ua tau zoo. Cov ntawv ci yuav tsum muab ntim tag nrho cov khoom uas tsis muaj qhov chaw raug. |
| Cov txheej txheem | Ntau txheej muab kev tiv thaiv zoo dua, tab sis txawm tias ib txheej pab tau. |
| RFID zaus | Cov teeb liab zaus siab dua (xws li NFC ntawm 13.56 MHz) yooj yim dua los thaiv dua cov zaus qis dua (xws li 125 kHz). |
| Lub zog nyeem ntawv | Cov neeg nyeem RFID muaj zog tuaj yeem nkag mus rau hauv nyias lossis tsis zoo kaw cov ntawv ci. |
For most consumer purposes (protecting credit cards, passports, access badges), a few layers of tightly wrapped aluminum foil will sufficiently block casual scanning attempts.