Creating a Pendant for Sending Emergency 911 Messages

Creating a pendant for sending emergency 911 messages is a concept that involves both hardware and software components. Below, I'll outline a general idea of how such a pendant could work. Keep in mind that designing and implementing such a device requires careful consideration of technical, legal, and ethical aspects. Before proceeding with the development of such a device, it's crucial to consult with legal experts, emergency services, and relevant authorities to ensure compliance with regulations and ethical considerations.