A Smart Blind Glass System that automatically reacts not only to light, but also to human proximity — using an Ultrasonic Sensor — and gives alerts using a buzzer. You can design it in two main ways: Privacy Mode: 1.When someone comes near (detected by ultrasonic sensor), the glass turns opaque or the blinds close, and the buzzer gives a short alert. Obstacle/Distance Alert: 2.If an object or person gets too close to the window, the buzzer sounds, and the glass becomes opaque for privacy or protection.