The playbook can install and configure [mautrix-gmessages](https://github.com/mautrix/gmessages) for you, for bridging to [Google Messages](https://messages.google.com/).
If you'd like to use [Double Puppeting](https://docs.mau.fi/bridges/general/double-puppeting.html) (hint: you most likely do), you have 2 ways of going about it.
### Method 1: automatically, by enabling Shared Secret Auth
The bridge will automatically perform Double Puppeting if you enable [Shared Secret Auth](configuring-playbook-shared-secret-auth.md) for this playbook.
This is the recommended way of setting up Double Puppeting, as it's easier to accomplish, works for all your users automatically, and has less of a chance of breaking in the future.
### Method 2: manually, by asking each user to provide a working access token
**Note**: This method for enabling Double Puppeting can be configured only after you've already set up bridging (see [Usage](#usage)).
When using this method, **each user** that wishes to enable Double Puppeting needs to follow the following steps:
- retrieve a Matrix access token for yourself. Refer to the documentation on [how to do that](obtaining-access-tokens.md).
- send the access token to the bot. Example: `login-matrix MATRIX_ACCESS_TOKEN_HERE`
- make sure you don't log out the `Mautrix-gmessages` device some time in the future, as that would break the Double Puppeting feature
## Usage
You then need to start a chat with `@gmessagesbot:YOUR_DOMAIN` (where `YOUR_DOMAIN` is your base domain, not the `matrix.` domain).
