1. Our cheap, ultra-reliable wired networks made credit-card authentication over the phone frictionless. 我们实惠的、非常可靠的有线网络使通过电话进行信用卡认证变得轻而易举。
2. Further down the road is biometric authentication, which could be encrypted with, say, a fingerprint. 下一步是生物识别认证，可以用指纹等进行加密。
3. A troublesome area is the management of the keys used for encryption and authentication. 一个麻烦的领域是用于加密和身份验证的密钥的管理。
4. AAA information file can be used not only for identity mapping but also for authentication and authorization. AAA 信息文件不仅可用于身份映射，还可以用于身份验证和授权。
5. The authentication mechanisms' implementation might have weaknesses and allow, for example, credential interception and replay. 身份验证机制的实现可能存在弱点，比如准许凭证拦截和重播。
