The embodiment of the application provides a method, device and system for obtaining authentication information, which relates to the field of communication technology and can improve the success rate of obtaining authentication information. The method includes: the second device receives the first beacon message sent by the first device including the identification information of the first device and the network status of the first device; and the second device sends the first authentication information for the first device to access the first network based on the first beacon message; and in the case of the second device determining that the first device has failed to receive the first authentication information, The second device creates a second network, and the second device uses the second network to send the first authentication information to the first device.
【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请，说明书已公开。
【技术保护点】
PCT国内申请，权利要求书已公开。
【技术特征摘要】
【国外来华专利技术】2016.12....
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