There is an alternative.
unless someone
There is an alternative , I mean , it 's still , there 's uh  you know , your point stands about there be  needing to be an infrastructure , but it doesn't have to be synchronized with the little clock 's timer on it. You c I mean , I  when I  when I did it I synchronized it by voice , by whispering " one , two , three , four " onto the microphone
Hmm.