The cruel irony of phone-based safety tools is that emergencies are exactly the moments when reaching your phone may be impossible. The phone is in a handbag. It is across the room. Your hands are not free. Guardian's answer is Voice Guard: a chosen phrase, spoken aloud, triggers the same full emergency dispatch as holding the SOS button.
A phrase you choose
Voice Guard listens for a personal trigger phrase the user configures — something natural enough to say under stress, distinctive enough not to fire during ordinary conversation. When the phrase is detected, Guardian starts the complete response: live location streaming, evidence capture, trusted-contact notification, and responder dispatch with the expanding-ring or moving-cluster strategy.
Reliability is the hard part
A voice trigger that fires falsely erodes trust; one that fails to fire is worse. The engineering effort in Voice Guard has gone into reliability hardening: keeping detection alive across Android's aggressive battery management, surviving screen-off states, and handling noisy environments. It is also why Voice Guard ships alongside — not instead of — the hold-to-SOS button, the wearable trigger and the safety timer. Layered triggers mean no single point of failure.
Privacy, by construction
Listening for one phrase is not the same as recording conversations. Voice Guard is built to detect its trigger, not to store audio of daily life — consistent with the DPDP-aligned consent model that runs through the whole Guardian app. Safety features that quietly become surveillance features do not deserve anyone's trust, and we build accordingly.