In the coming days, Google's modular Nest Secure alarm system will gain a new ability. The microphone inside the Nest Guard keypad, which was previously used only for the Assistant functionality, will start pulling double-duty to detect for the sound of glass being broken on windows and doors. The idea is that even if your Nest Detect sensors aren't disturbed by a broken window, the Guard may still be able to alert you to a break in.

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