Extending the Touchscreen Pattern Lock Mechanism with Duplicated and Temporal Codes

Table 2

Shannon entropy for nodes used in the lock pattern. A value of 3.00 indicates that there is no bias towards particular nodes and that all nodes are used equally. = exact values not provided.

	Standard pattern lock (Andriotis et al. [10])	Enhanced lock mechanism
Start nodes	2.35	2.68
End nodes		2.92
All nodes		2.97