The digital sign technique is applied in many fields such as identify confirmation and information authentication on Internet.

数字签名技术可以提供网络身份认证等功能，具有广泛的应用。

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This might include the user's contact information, authentication credentials, directory locations, and so on.

这包括用户的联系方式信息、认证凭证、目录位置等。

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Not only the important information but also the entire Linux environment including authentication services is encrypted in ROM (Read Only Memory).

ENGADGET: Panasonic and Red Bend Software announce Android security partnership at MWC

Will the taxi driver app providers be upgrading their apps to utilize some form of initial authentication to ensure that only drivers get access to passenger location information?

FORBES: Smartphone Taxi E-Hail Apps: New Convenience or Potential Deathtrap

Warnings to users (perhaps at certain times and locations), initial authentication, background check requirements, reporting and logging pickup location information and details as to which drivers saw which passenger signals, as well as logging all driver locations on an ongoing basis are some initial suggestions.

FORBES: Smartphone Taxi E-Hail Apps: New Convenience or Potential Deathtrap