A Rhythm-Based Authentication Scheme for Smart Media Devices

Table 5

Comparison of the existing locking systems and the RLS against various attacks.

	Pattern lock	PIN	Password	RLS
Brute force attack	△	X	O	O
Shoulder surfing attack	X	X	O	O
Dictionary attack	△	X	△	O
Smudge attack	X	X	△	O

O: strong, △: medium, and X: weak.