圖像來源，Sabrina Lantos/HBO Max
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：
，更多细节参见雷电模拟器官方版本下载
这其中，下沉市场成为了各大品牌的必争之地。
The reason is always the same: the content and the key that decrypts it are both present on the client’s machine. The user’s hardware decrypts the content to display it. The user’s hardware is, definitionally, something the user controls. Any sufficiently motivated person with the right tools can intercept the decrypted output.