用戶在輔助功能裡激活“搖頭控制”(Switch Control)就能將向左搖頭或者向右搖頭綁定到某個你想讓它執行的操作上
Control your iPhone or iPad with Head Movements (iOS 7 new feature)
iOS 7 Switch Control – Set Up A Single Switch with Auto Scanning
Ref : http://hk.apple.nextmedia.com/news/art/20131011/18459584