Abstract: An advertisement publishing method comprises following steps: recognizing current condition of the advertisement broadcasting terminal. Determining whether the recognized condition meets the publishing condition. Generating and sending a signal to the advertisement server to signal the advertisement server to provide an advertisement when the current condition of the advertisement broadcasting terminal meets the publishing condition. Generating an advertisement broadcasting interface and displaying the advertisement broadcasting interface on the display screen of the advertisement broadcasting terminal. And receiving the advertisement and broadcasting the advertisements provided by the advertisement server on the generated interface.

Abstract: An electronic device includes a storage unit, a touch input unit, a display unit, and a processor. The storage unit is used for storing decryption passwords. The touch input unit is configured to select a file for encryption/decryption, and to generate corresponding handwriting input signals in response to the handwritten signature of a user on the touch input unit. The processor includes a detecting module, a feature extracting module, and an encryption and decryption module. The detecting module detects the coordinates of the handwriting of the user's signature. The feature extracting module extracts the feature of the user's signature according to the detected coordinates, and stores the extracted feature of the user's signature. The encryption and decryption module uses the features of the user's signature as a password to encrypt or decrypt the selected file. An encryption method and a decryption method are also provided.