RFID keyfobs yog cov khoom siv me me, nqa tau yooj yim uas siv xov tooj cua Frequency Identification (RFID) thev naus laus zis los muab kev tswj xyuas kev nyab xeeb thiab kev txheeb xyuas. Thaum lub keychain muab tso rau ze ntawm tus nyeem ntawv RFID, nws xa nws cov ntaub ntawv qhia txog tus kheej, tso cai rau kev nkag mus lossis ua rau muaj kev nqis tes ua, xws li qhib lub qhov rooj lossis qhib lub kaw lus.

RFID keychains feem ntau yog siv rau kev nkag mus rau hauv cov chaw ua haujlwm, chav tsev, thiab cov tsev ruaj ntseg, nrog rau kev thauj mus los lossis kev them nyiaj. Lawv muab lwm txoj hauv kev yooj yim thiab ruaj ntseg rau cov yuam sij lossis daim npav, txo qhov kev pheej hmoo ntawm tub sab nyiag lossis poob. Cov keychains kuj tseem muaj zog, hnav, thiab yooj yim nqa, ua rau lawv zoo tagnrho rau kev siv txhua hnub.

Zuag qhia tag nrho, RFID keychains muab ib qho yooj yim tab sis muaj txiaj ntsig kev daws teeb meem rau kev nyab xeeb, ua rau lawv yog ib feem tseem ceeb ntawm kev ruaj ntseg niaj hnub.