https://blog.wongcw.com/2020/01/22/%e8%b0%b7%e6%ad%8c%e6%8e%a8%e5%87%baenvelope%e6%87%89%e7%94%a8%e5%b0%87%e6%89%8b%e6%a9%9f%e8%a3%9d%e5%85%a5%e7%b4%99%e6%ae%bc%e4%b8%ad%e4%bb%a5%e6%8e%a7%e8%a3%bd%e6%89%8b%e6%a9%9f%e6%88%90%e7%99%ae/
谷歌推出Envelope應用將手機裝入紙殼中以控製手機成癮