No image of the finger is taken or stored instead data is converted into a unique sequence of numbers that are then used to identify the candidate and cannot be converted back into an image.

扫描时不保留指纹图像，仅存储数据字符串，该字符串只能用于考生身份认证，无法恢复指纹图像。

youdao

No image of the finger is taken or stored instead data is converted into a unique sequence of numbers that are then used to identify the candidate and cannot be converted back into an image.

扫描时不保留指纹图像，仅存储数据字符串，该字符串只能用于考生身份认证，无法恢复指纹图像。

youdao