I think it's because how simple and ubiquitous it is. Just open the backplate and stick it to your detonator to use the speaker terminal as a source signal.
This page has more info: https://timbin.wordpress.com/2013/07/30/hacking-like-a-terrorist-the-casio-f-91w/
I think it's because how simple and ubiquitous it is. Just open the backplate and stick it to your detonator to use the speaker terminal as a source signal.
This page has more info: https://timbin.wordpress.com/2013/07/30/hacking-like-a-terrorist-the-casio-f-91w/