Фото: Виталий Тимкив / РИА Новости
The modern, professional answer to this problem is the Trusted Execution Environment, or TEE.，这一点在WPS下载最新地址中也有详细论述
Standard Digital。谷歌浏览器【最新下载地址】对此有专业解读
甚至还有一些讲究「降本增效」的防窥膜，只蚀刻纵向光栅，导致只能左右防窥、上下或者斜视看过去依然是一览无余的：
Actual 48x48 greyscale renders from confusable-vision. Left character in each pair is the confusable source (Cyrillic or Hebrew); right is the Latin target. Can you tell which is which?