Yes.
Session on mobile will use the same locking mechanism that is set on your device. If you use the fingerprint, pin, or pattern to unlock your mobile device, that is how you will unlock your Session account. On Session desktop, you can create your own password to use.
To set up password protection on your Session account:
On mobile
- Go into the main Settings tab
- Under Privacy you will see the option to 'Lock Session'
- Toggle the 'Lock Session' setting to green to enable Session will follow the existing password/pin/fingerprint settings as per your device settings. </aside>
On desktop
- Go into the main Settings tab
- Under Privacy, select the option to 'Set account password'
- A pop up box will appear
- Enter your password into the pop up box
- Click confirm your new password
For more info, check out this privacy settings video guide: