1. Access controller: lub hauv paus tseem ceeb ntawm kev tswj kev nkag mus, sib npaug ntawm CPU ntawm lub computer, lub luag haujlwm rau kev ua haujlwm thiab khaws cov ntaub ntawv tawm tswv yim thiab cov ntaub ntawv ntawm tag nrho cov system, tswj, thiab lwm yam.
2. Daim npav nyeem ntawv: ib lub cuab yeej uas nyeem cov ntaub ntawv (cov ntaub ntawv biometric) hauv daim npav.
3. Hluav taws xob ntsuas phoo: qhov kev ua tiav ntawm lub qhov rooj xauv hauv qhov kev tswj xyuas kev nkag. Cov neeg siv yuav tsum xaiv cov xauv sib txawv raws li cov khoom siv ntawm lub qhov rooj, qhov yuav tsum tau tawm mus, thiab lwm yam.
4. Daim npav: tus yuam sij qhib qhov rooj. Tus neeg tuav daim npav tus kheej daim duab tuaj yeem luam tawm ntawm daim npav, thiab daim npav qhov rooj thiab daim npav hauv siab tau muab tso rau hauv ib qho.
5. Lwm yam khoom siv.
