ᴛᴇᴄʜ ʙʜʀᴀᴛ on Instagram: "This Laser Tripwire Protects Your Screen Before Anyone Can Read It 🤯 This setup uses a physical laser tripwire across a doorway. When the beam is broken, it triggers an instant response—returning your screen to a safe state before anyone can read a single word. There’s no webcam tracking, facial recognition, or invasive software. Just a laser, optical sensor, and microcontroller converting real-world movement into a digital action in milliseconds. What makes it powerfu