“Choose one, If you want”is Non-Connect audio signal transmitter by using effect of electromagnetic induction. Each coil has it’s own audio signal, You can choose sounds depend on where you put speaker module.
In this case, these coils transmits an information in three types of languages. Japanese, English and Morse Cord. The Information is same as this text.
“Choose one, if you want.” [2016]
johnsmith
“Choose one, if you want.”
Outline
Technique: Given: 1. Magnet, 2. Coil