Objective: Add an auditory layer to the user experience by integrating a localized audio output system. Technical Scope: Hardware: Integrate a DFPlayer Mini or an I2S DAC (PCM5102A) with a 3W speaker. Logic: Trigger a "Welcome Sir" .wav or .mp3 file from an SD card upon a successful, non-duplicate entry event. Scalability: Future-proofing for a local voice assistant (using ESP-SR) to handle basic room commands without cloud dependency.