Access frontend without password

I have a Raspberry with a 3.5 inch screen that displays a certian page on my Home Assistant. I want this raspberry to access this page without a password (due to not having a keyboard attached to the pi). All other devices should need a password. Is there some way to achive this. I already tried to trusted networks / trusted users, but this locks out my other devices or allows those devices to open Home Assistant without a password. I have looked at long lived access tokens, but I can’t find a way to use this token on the Pi

The pi is configured with a autostart with the following content:

@lxpanel --profile LXDE-pi
@pcmanfm --desktop --profile LXDE-pi
@unclutter -idle 0
@xscreensaver -no-splash
@xset s 0 0
@xset s noblank
@xset s noexpose
@xset dpms 0 0 60
@point-rpi
@chromium-browser --kiosk --app=https://<HA-Address>/lovelace/5?kiosk

How can I pass the long lived access token to this config?

Don’t know how but you need to set a http Bearer header

I already found this one, but the question is how? Is there someone who can provice an example?