Method of starting a computer using a biometric authentication device

A computer connectable to a biometric authentication device, the computer comprising:

• a system device connected to the biometric authentication device by a software communication circuit;
• a power control circuit connected to the biometric authentication device by a hardware communication circuit, for starting power of the computer when receiving a signal indicating pressing of a power button or successful authentication by the biometric authentication device via the hardware communication circuit;
• and
• a boot execution circuit for executing normal boot when the computer is started by the pressing of the power button, and executing fast boot when the computer is started by the successful authentication by the biometric authentication device, the normal boot involving initialization of the software communication circuit, and the fast boot omitting the initialization of the software communication circuit.

A method of starting a computer connectable to a biometric authentication device, the method comprising:

• starting power of the computer in response to one or more of pressing of a power button and successful authentication by the biometric authentication device;
• executing normal boot when the computer is started by the pressing of the power button, the normal boot requesting password input by a user;
• and
• executing fast boot when the computer is started by the successful authentication by the biometric authentication device, the fast boot using a password stored in the computer to access a system without acquiring a password from the user and the biometric authentication device.

A method of starting a computer connectable to a biometric authentication device, the method comprising:

• starting power of the computer in response to successful authentication by the biometric authentication device;
• executing normal boot when the biometric authentication device authenticates a first part of a human body to start the computer;
• and
• executing fast boot when the biometric authentication device authenticates a second part of the human body to start the computer, the fast boot being completed in a shorter time than the normal boot.

A method of starting a computer connectable to a biometric authentication device, the method comprising:

• starting power of the computer in response to one or more of pressing of a power button and successful authentication by the biometric authentication device;
• executing normal boot when the computer is started by the pressing of the power button, the normal boot involving initialization of the biometric authentication device;
• and
• executing fast boot when the computer is started by the successful authentication by the biometric authentication device, the fast boot omitting the initialization of the biometric authentication device.