A New Sensors-Based Covert Channel on Android

Table 2

Example of encoding from a character string up to the vibration pattern. The bit vibration interval is 200 ms and the initial delay is 0.

Target string	[email protected]
7-bit ASCII code	a	h	m	a	d	a	l	h	a	i	q
	1100001	1101000	1101101	1100001	1100100	1100001	1101100	1101000	1100001	1101001	1110001
	i	@	g	m	a	i	l	.	c	o	m
	1101001	1000000	1100111	1101101	1100001	1101001	1101100	0101110	1100011	1101111	1101101
Vibration pattern array	{0, 400, 800, 600, 200, 200, 600, 400, 200, 400, 200, 600, 800, 600, 400, 200, 400, 400, 800, 600, 200, 400, 400, 400, 200,; 200, 600, 400, 800, 600, 200, 200, 400, 800, 600, 600, 200, 200, 400, 400, 1200, 400, 400, 1000, 200, 400, 200, 600, 800,; 600, 200, 200, 400, 600, 200, 400, 600, 200, 200, 600, 200, 400, 600, 800, 200, 1200, 200, 400, 200, 200}