Designing a feature for Facebook Portal to use in case of an emergency is a challenging task that requires careful consideration of user needs and potential use cases. One possible solution is to include an emergency button on the device that users can press in the event of an emergency. When the emergency button is pressed, the device would automatically call emergency services and provide the user's current location. Additionally, the device could send an alert to the user's emergency contacts, letting them know that the user is in distress and providing the user's location. To ensure that this feature is effective, it would be important to conduct user research to understand how users might interact with the emergency button and what additional functionality they might need in an emergency situation. Additionally, it would be important to work with emergency services providers to ensure that the device can accurately and reliably provide the user's location. Overall, designing an emergency feature for Facebook Portal would require a careful balance of user needs, technical capabilities, and legal considerations, but could ultimately provide an important safety benefit for users of the device.