Output method and output device for cloud printing

An output device for cloud printing, comprising:

• a verification circuit configured for reading a piece of verification information displayed by a second electronic device;
• a communication circuit coupled to the verification circuit and configured for obtaining a file from a server according to the piece of verification information;
• an output circuit coupled to the communication circuit and the verification circuit and configured for outputting a paper document of the file;
• and
• a user interface module coupled to the verification circuit and the output circuit, and configured for providing a user interface to receive a first verification code, and configured for determining whether the first verification code matches the piece verification information, and configured for controlling the output circuit to output the paper document of the file when the first verification code matches the piece of verification information;
• wherein the output device receives the first verification code from the user interface and sends a second verification code to the second electronic device for further verification after determining whether the first verification code matches the piece of verification information, and the second verification code is generated according to encode data of the file.