Method for determining vital sign information, identity authentication method and apparatus

An identity authentication method, comprising:

• acquiring first biological feature data collected when an object presses on a biological feature sensor, and performing identity authentication for the object according to the first biological feature data, the first biological feature data being used to reflect a body texture feature of the object;
• parsing a plurality of pieces of first biological feature data of the object to acquire second biological feature data, determining vital sign information of the body of the object according to the second biological feature data, and performing aliveness identification for the object according to the vital sign information, the second biological feature data being used to reflect a vital sign of a body of the object;
• and
• judging whether the identity authentication is successful according to a result of the identity authentication and a result of the aliveness identification.

A biological feature sensor, comprising:

• a light source,
• a sensing array, and
• a biological feature chip;
• wherein light emitted by the light source is reflected by an object and received by the sensing array to generate first biological feature data;
• the biological feature chip is configured to acquire the first biological feature data collected when the object presses on the biological feature sensor;
• the first biological feature data is parsed to determine vital signal information of a body of the object;
• wherein the first biological feature data is used to reflect a body texture feature of the object, and the second biological feature data is used to reflect a vital sign of the body of the object.