不止手机，笔记本电脑也曾经尝试过硬件集成的防窥功能，惠普当年的 Sure View 技术方案就是其中一例：
Columnar or ortholinear keyboards stack the keys in orderly columns, often with rows that are not linear. Proponents claim this makes the keys easier to reach. Whether that’s true will be up to your fingers to decide, but I can say for certain that if you learned to type on a staggered keyboard, switching to a columnar layout is tough. It will take days, possibly weeks before you instinctively hit the C key. The N, M and B keys don’t fare much better.
，这一点在WPS下载最新地址中也有详细论述
Stream.pull() creates a lazy pipeline. The compress and encrypt transforms don't run until you start iterating output. Each iteration pulls data through the pipeline on demand.
Bats are legally protected in the UK, so it's generally not possible to remove them.
经过多年发展和积累，我国在提升全要素生产率方面已拥有诸多有利条件和基础：