If you use a fingerprint reader or other biometricdevice to log on to your computer, make sure you write down your password before upgrading.
如果您当前系统式通过指纹或者其他生物识别设备来登录系统的，请务必在升级前写下您的密码。
2
Much like authentication with physical tokens, biometric authentication has the limitation that you need to have access to a physical input device in order to be able to authenticate.
与使用物理标记的认证很相似，生物认证也存在限制，您需要访问物理输入设备以便能够进行认证。
3
This patented device enables Apple to secretly collect, store and potentially use sensitive biometric information about you.