Access method and device

The invention provides an access method and device, and the method comprises the steps: transmitting a login triggering instruction to a client if a terminal where the client is located supports a first authentication mode but does not initiate the first authentication after the client completes the front domain authentication, and the client outputs login prompt information corresponding to the first authentication mode according to the login trigger instruction. And if a first authentication request which is sent by the client based on the login prompt information and corresponds to the first authentication mode is received, starting the first authentication mode to perform first authentication on the client. And if the client passes the first authentication, sending a first authentication response to the client, so that the client enters a back domain. 本说明书提供一种接入方法及装置，所述方法包括：在客户端完成前域认证后，若客户端所在终端支持第一认证方式但未发起第一认证，则向客户端发送登录触发指示，以使得客户端根据登录触发指示输出与第一认证方式对应的登录提示信息。若接收到客户端基于登录提示信息发送的与第一认证方式对应的第一认证请求，则启动第一认证方式对客户端进