After doing a little research, I found this type of technology already available to consumers via a relatively inexpensive application called FaceCode. The software requires the use of a webcam to recognize and log PC users into their systems. You can add as many users as you want, provided they each have a Windows account. If the system fails to recognize your face, you can recall the Windows user name and password by using a hot-key combination.

在进行了一番小小的调查之后，我发现这样的技术已经可以通过一个相对便宜的叫FaceCode的应用软件实现了。这个软件要求用户使用一个网络摄像系统来识别用户，让用户登陆他们的系统。你可以任意添加你需要的用户，只要他们自己分别有一个windows的帐号。如果系统无法识别你的脸，你可以通过一组热键取回你的Windows用户名和密码。