Daga matakan sanya abin rufe fuska daidai, mun fahimci cewa aikin wayar hanci shine sanya abin rufe fuska ya dace da fuska sosai, da kuma tabbatar da cewa kwayoyin cuta ba su da sauƙin shiga cikin sassan numfashi.

Tsarin waya na hanci yana buƙatar gurɓata shi da ƙarfi ta waje, baya dawowa ƙarƙashin ƙarfi, kuma yana kiyaye sifar data kasance baya canzawa. Ana kiran wayar hanci "kashin baya" na abin rufe fuska.