https://blog.wongcw.com/2022/01/08/typealike%ef%bc%9a%e6%94%9d%e5%83%8f%e9%a0%ad%e9%8f%a1%e5%ad%90%e5%af%a6%e7%8f%be%e6%89%8b%e5%8b%a2%e6%93%8d%e4%bd%9c%e9%9b%bb%e8%85%a6/
Typealike:攝像頭+鏡子實現手勢操作電腦