Safe Mobile allows generating new signer keys so you can use them as a signer in a new or existing Safe. To do so, navigate to Settings > App Settings > Owner Keys.

From there, you can start the process for adding a new signer key by using the "+" button in the top-right.

Generating a new signer key is super simple. Just click Create New Key, give the new signer key a name ... and you are done!

Your new signer key is securely stored on your mobile device. However, you should make sure to create a backup of your signer key, so you can recover it in case you lose access to your mobile device.