Ma keyfob a RFID ndi zida zazing'ono zonyamulika zomwe zimagwiritsa ntchito ukadaulo wa Radio Frequency Identification (RFID) kuti zipereke njira yodzitetezera yolowera ndi kuzindikira. Zili ndi chip kakang'ono ndi antenna, zomwe zimalumikizana ndi owerenga RFID pogwiritsa ntchito mafunde a wailesi. Pamene keychain ikayikidwa pafupi ndi owerenga RFID, imatumiza zambiri zake zapadera zodziwira, zomwe zimathandiza kuti munthu alowe kapena kuyambitsa vuto, monga kutsegula chitseko kapena kutsegula makina.

Ma keychains a RFID amagwiritsidwa ntchito kwambiri polowera m'maofesi, m'nyumba zogona, ndi m'nyumba zotetezeka, komanso m'mayendedwe apagulu kapena njira zolipirira. Amapereka njira ina yabwino komanso yotetezeka m'malo mwa makiyi kapena makadi achikhalidwe, zomwe zimachepetsa chiopsezo cha kuba kapena kutayika. Ma keychains ndi olimba, opepuka, komanso osavuta kunyamula, zomwe zimapangitsa kuti akhale abwino kugwiritsa ntchito tsiku ndi tsiku.

Ponseponse, ma keychains a RFID amapereka njira yosavuta komanso yothandiza yopezera mwayi wotetezeka, zomwe zimapangitsa kuti akhale gawo lofunikira kwambiri la machitidwe achitetezo amakono.