Patent attributes
Various embodiments of the present technology enable users to sign in to an account without a password. For example, when receiving a request to register a device with an account, a user can be prompted to enter their email address. In response, two tokens are generated. A first token is sent to a client application on the device and the second token is sent to the user's email. The user can then only login to their account with the device if the device has both tokens. Thus, if someone intercepts the email, they will be unable to login from another device since they don't have the first token. If the client token and email token cannot be automatically joined on the same device, a web page showing a code can be displayed on a first device, which can be entered on the second device to finish login process.
