An yi amfani da na'ura mai alamar Laser a kowace masana'antu don yin alama, kuma ba banda masana'antar wayar hannu.Bari mu dauki iphone misali.Tun lokacin da aka kafa shi, daga iphone 5 zuwa iphone Xs, alamar laser yana da mahimmanci ga ɓangaren sa.Kamar IC, karfe a ciki, akwai uni ...