隐私防窥屏难度极大，已跳票一年：
2. Separate same-font from cross-font scoring. Same-font comparisons (mean 0.536) are the strongest signal. A namespace validation system that weights same-font scores higher than cross-font scores will have better precision than one that treats all fonts equally.
，详情可参考WPS下载最新地址
if (lines.length 0) yield lines;，这一点在旺商聊官方下载中也有详细论述
The modern, professional answer to this problem is the Trusted Execution Environment, or TEE.