It was transmitting a diagnostic code in optical pulses. The system was waiting for a return signal of light to confirm a human was present, not a remote hacker.
Resolving this requires a transition from a "Locked" to an "Unlocked" state, which usually involves three main steps: flashing lock flag is locked please unlock it first full
Go to Settings > About phone and tap on Build number seven times until you see a message saying you are a developer. It was transmitting a diagnostic code in optical pulses
Press and hold the Child Lock button, or hold Delay Wash and Pre Wash together. Press and hold the Child Lock button, or
If your phone is "bricked" (won't turn on) and the lock flag is stuck, some users use EDL (Emergency Download) Mode . This often requires "test points" (physically touching pins inside the phone) or an authorized account, which is generally not recommended for beginners. Why does this flag exist?
If you provide the exact device or software (e.g., “TWRP on Pixel 6” or “CH341A programmer”), I can give you a more targeted solution.