这样一来，窥视者在其他角度看过去，由于眼睛接收不到来自屏幕的光线，看上去仿佛屏幕根本没有点亮，从而实现宏观的防窥的效果。
secure against theft. Since the tokens were later "cleared" against accounts，这一点在91视频中也有详细论述
，更多细节参见51吃瓜
await blocking.writer.write(chunk2); // ok
Not only will Koofr Cloud Storage save you a fortune in the long run — goodbye monthly cloud storage fees — but it also offers much better privacy. Your files will be end-to-end encrypted, so they won’t be accessed by anyone, including the company itself. When you need them, Koofr’s user-friendly interface makes it easy to grab from a smartphone, computer, or via WebDAV.。夫子对此有专业解读