gBridge allows you to enable security confirmations for certain devices to prevent interacting with them unauthorized or accidentally. You can enable it in the device settings.
You can choose inbetween No confirmation, Acknowledgements and PIN code protection.
When asking Google to interact with a device, it is simply done without any further queries.
Google queries back whether your want to execute the action.
Google queries require you to say a PIN code to execute successfully. You can set a PIN code (consisting of numbers only) in the device settings.