Check out next slides for cipher morse code
F (● ● ― ●)
Two quick taps, one long hold, followed by another quick tap
I (● ●)
Two quick taps
G (― ― ●)
Two long holds followed by a quick tap
H (● ● ● ●)
Four quick taps
T (―)
Press and hold for a long hold
Y (― ● ― ―)
Long hold, quick tap, followed by two long holds