Build a privacy-first personal safety app/device concept.
Core idea: The user sets a few secret duress words or phrases. The system is always listening locally for those phrases, but it does not record or store audio. If it hears one of the secret phrases, it silently triggers an emergency response such as sending the user’s live location to trusted contacts and optionally initiating an emergency alert workflow.
Important constraints:
- privacy-first
- no recording
- no audio history
- no cloud storage of microphone input
- local processing as much as possible
- minimal memory retention
- architecture should be easy to audit and verify
- simple, clean, serious design
- should feel like a real safety product, not a gimmick
What I want:
- a product concept
- app flow / UX
- system architecture
- key features
- threat model
- privacy model
- MVP plan
- suggested tech stack
- then generate starter code for a digital prototype
Tone: Write like a cracked startup engineer / designer building a serious consumer safety tool for high-risk users. Prioritize simplicity, privacy, and real-world usefulness.