A code is sent with no audible sound or visible light. How was it transmitted?
Category: Mystery · Difficulty: hard
Hint: Consider communication methods beyond sight and hearing.
Answer
Signals were sent through vibrations unnoticed
Explanation
Subtle vibrations delivered messages undetected by normal senses.
This is a hard mystery riddle — a tricky one that takes a little thought. The answer is Signals were sent through vibrations unnoticed.
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