Nyob rau hauv lub neej niaj hnub no sai sai, qhov tsis yooj yim ntawm cov yuam sij ib txwm muaj tshwm sim. Xav txog cov xwm txheej no: Rov qab los ntawm kev mus ncig ua lag luam thaum tsaus ntuj, tshawb hauv koj lub hnab tab sis nrhiav tsis tau koj cov yuam sij; tus neeg laus nyob hauv tsev ib leeg, dheev hnov qab lawv cov yawm sij thiab xauv tawm; lossis thaum mus txawv tebchaws, txhawj xeeb txog kev nyab xeeb hauv tsev tab sis tsis tuaj yeem kuaj xyuas nws raws sijhawm. Cov teeb meem no tsis yog tsuas yog cuam tshuam rau lub neej zoo xwb tab sis kuj tuaj yeem ua rau muaj kev nyab xeeb.
Qhov tshwm sim ntawm cov xauv ntse tau hloov pauv qhov xwm txheej no. Nws tsis yog ib qho yooj yim nkag tau yooj yim tswj ntaus ntawv, tab sis kuj yog thawj kab ntawm kev tiv thaiv kev ruaj ntseg hauv tsev thiab lub rooj vag rau ntse nyob. Los ntawm cov thev naus laus zis xws li biometrics, kev tswj chaw taws teeb, thiab kev saib xyuas lub sijhawm tiag tiag, cov xauv ntse ua rau "tsis muaj qhov tseem ceeb" qhov tseeb, ua kom muaj kev ruaj ntseg thiab yooj yim.
