Ntim tau ua ib tes dej num tseem ceeb nyob lov thauj uas yuav muaj kev ruaj ntseg. Hnab tseem zam tau tej khoom noj thiab muab mus rau lwm yam khoom. Zaub mov ntim tau txog tseem noj noj no. Tej lub ntim zaub mov no muaj zog heev thiab muaj cov counterfeit los tiv thaiv cov ntawv, yog yuav tiv thaiv tus saib xyuas ntawm cov lag luam ntawm hluav taws. Laser yuav qhia tau, nyob rau hauv tej xim, SMS daim ntawv ntaus cim rau ntawm lub hnab. Tseem retailers tiv thaiv tub sab, zaub mov ntim cov xuas qhov ntsuam xyuas lossis hauv, thiab kom tau txais kev pab tau cov qhov hluav taws xob hauv khw rau degaussing.
