Ze rau {- teb kev sib txuas lus (NFC) Kev sib txuas lus tseem ceeb, qhia qhov tseem ceeb ntawm cov khoom sib txuas lus thiab cov ntawv thov qhov tseem ceeb vim nws cov kev pabcuam tseem ceeb. Kev khiav hauj lwm nyob rau hauv lub 13.56MHz zaus band, cov thev naus laus zis no siv cov ntaub ntawv sib txuas lus 106-424kbps, kom muaj kev ruaj ntseg ob qho tib si kev ruaj ntseg thiab kev yooj yim.
Los ntawm kev xav paub txuj ci, duab NFC ua haujlwm dhau los, daim duab lub zog thiab teb cov lus txib los ntawm cov nyeem ntawv hauv hluav taws xob ntawm tus nyeem ntawv / kws sau ntawv tsis xav tau lub zog sab hauv. Qhov passive no ua rau lawv txoj kev koom ua ke rau ntau cov ntaub ntawv, xws li cov ntawv ntim me me, cov khoom ntim khoom, feem ntau yog ib ob peb millimeters mus rau centimeters). NFC cim npe tau categorized los ntawm hom 1 txog hom 4 raws li kev muaj peev xwm thiab ua haujlwm. Hom 4 cim tau them nyiaj yug Iso / iec 14443 Hom cov kev cai A / B, muaj qhov muaj peev xwm ntau ntawm 32kB, thiab muab lub peev xwm rov siv tau.
Cov tshuab thev naus laus zis no zoo nyob hauv peb qhov tseem ceeb: Ua ntej, kov}} {1} mus sib tham sib. Cov neeg siv tsuas tuav lawv NFC {{3} Enabled ntaus ntawv ze rau cov ntaub ntawv sib pauv cov ntaub ntawv, ua rau cov txheej txheem ntau dua li scanning ib qho kev kuaj QR. Thib ob, ntau -}}}}}} }amicamic prev key key {key key} Cov xwm txheej kev nyab xeeb xws li kev them nyiaj nruab nrab thiab kev tswj hwm. Thaum kawg, kev ruaj khov sib haum tso cai rau kev sib koom ua ke nrog cov khoom siv niaj hnub zoo li cov khoom siv hluav taws xob xws li lub npe nyob rau ntawm POS kev xaiv.
Nrog rau kev loj hlob sai ntawm Internet ntawm tej yam (iot), nfc cim npe yog evolving kev sib xyaw ua ke. Embedded sensors Pab kom muaj kev sib xyaw ua ke nrog kev siv thev naus laus zis los nthuav dav kev sib txuas lus kev sib txuas lus, txuas ntxiv tsav tsheb tshiab hauv kev txawj ntse. Qhov kev daws teeb meem no, uas tawg ua kev tso cai RF thev naus laus zis nrog cov digital ua, yog rov ua thaj tsam ntawm tib neeg {2} kev sib cuam tshuam.
