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Tap three times. Pause. Repeat. Cover mouth. Save breath. Call 112 if possible.
Step 1: Tap three times on metal pipes or solid surfaces, then pause and listen
Step 2: Repeat the pattern regularly — rescuers search for rhythmic sounds
Step 3: Cover mouth with cloth and breathe slowly between signals
Step 4: Use phone flashlight or reflective object toward sound of rescuers if visible gap exists
Step 5: Call 112 if phone has signal — even a brief connection helps triangulation
DEVELOPMENT FIXTURE — Do NOT shout unless rescuers are directly above and asking for voice contact.
DEVELOPMENT FIXTURE — Do NOT bang on loose debris that could collapse your pocket.
DEVELOPMENT FIXTURE — Do NOT light fires for smoke signals — toxic gas and oxygen loss.
DEVELOPMENT FIXTURE — Do NOT use powered tools unless you are trained and sure of stability.
Signaling is for survival until professional urban search and rescue arrives.