RFID keyfobs ndi ang'onoang'ono, zipangizo zonyamulika zomwe zimagwiritsa ntchito luso la Radio Frequency Identification (RFID) kuti zipereke chitetezo chotetezedwa ndi chizindikiritso.Zimakhala ndi chip chip ndi mlongoti, zomwe zimayankhulana ndi owerenga RFID pogwiritsa ntchito mafunde a wailesi. Keychain ikayikidwa pafupi ndi owerenga RFID, imatumiza zidziwitso zake zapadera, kulola mwayi wopezeka kapena kuyambitsa chinthu, monga kutsegula chitseko kapena kumasula makina.

Makiyi a RFID amagwiritsidwa ntchito nthawi zambiri polowa m'maofesi, m'nyumba, m'nyumba zotetezedwa, komanso mayendedwe apagulu kapena njira zolipirira. Amapereka njira yabwino komanso yotetezeka m'malo mwa makiyi achikhalidwe kapena makhadi, kuchepetsa chiopsezo cha kuba kapena kutayika. Ma keychains nawonso ndi olimba, opepuka, komanso osavuta kunyamula, kuwapangitsa kukhala abwino kugwiritsidwa ntchito tsiku ndi tsiku.

Ponseponse, ma keychains a RFID amapereka yankho losavuta koma lothandiza lofikira motetezeka, kuwapanga kukhala gawo lofunikira lachitetezo chamakono.