Weak PassPoint Passwords Detected by the Perimeter of Delaunay Triangles

Table 8

Estimation of type I error (estimated alpha, ), that is, of the probability that in DB.4.1, DB.4.2, and DB.4.3, the average of the perimeters of the triangles of a random graphical password belongs to the critical region. Comparison with the preset theoretical alpha .

(Theoretical)	. Of
		DB.4.1	DB.4.2	DB.4.3
0.2		0.1803	0.1962	0.1885	0.1883
0.1		0.0853	0.1023	0.0918	0.0931
0.05		0.0403	0.0545	0.0499	0.0482
0.02		0.0166	0.0248	0.0213	0.0209
0.01		0.0081	0.0157	0.0116	0.0118