Abstract: A voice key includes a voice sensor, a microprocessor chip, a storage device, a port, a record button, and an enter button. When the voice key is connected to a computing device and the record button is pressed, the voice sensor is triggered to record a voice signal input by a user. The microprocessor chip converts the voice signal into a password, stores the password in the storage device, and sends the password to the computing device to lock the computing device. When the voice key is connected to the computing device again and the enter button is pressed, the microprocessor chip retrieves the password from the storage device and sends the password to the computing device. The computing device is unlocked in response to determining that the received password matches the password stored in the computing device.

Abstract: A computer includes a storage unit, a communication unit, and a processor. The storage unit stores a password. The communication unit communicates the computer with a portable communication device. The processor includes a starting control module. During the booting up of the computer, when a password received by the communication unit from the portable communication device matches with the password stored in the storage unit, the starting control module controls the computer to start normally.

Abstract: An electronic apparatus, a peripheral device, and a system for encrypting and decrypting the electronic apparatus via the peripheral device are provided. The electronic apparatus stores a password which a user sets in a ROM of the electronic apparatus and writes the password to the peripheral device. Only when the electronic apparatus is connected to the peripheral device, the electronic apparatus fetches a password from the peripheral device, and if the electronic apparatus determines that the fetches password is the same as the stored password in the electronic apparatus, the electronic apparatus performs a function of turning on or unlocking the electronic apparatus.

Abstract: The invention disclosed is an alkali metal-ion secondary cell having a carbonaceous anode and an electrolyte, comprising an alkali metal salt dissolved in an organic electrolyte solvent. Intercalation and de-intercalation during repeated charge/discharge cycle of the secondary cell using a conventional electrolyte solvent causes continual exposure of bare surfaces of the carbonaceous material to the electrolyte, resulting in continual consumption of electrolyte in the formation of new passivation films on the bared or partially covered surfaces, adversely affecting the performance and capacity of the cell. An improvement on the conventional electrolyte involves the addition of fluorinated organic solvent to the conventional electrolyte and results in a more stable passivation film, much less consumption of electrolyte and better performance and cell capacity.