A New Visual Cryptography-Based QR Code System for Medication Administration

Table 1

The encoding and decoding table of the (2, 2)-threshold visual cryptography scheme.

Sij	[T1]ij	[T2]ij		Probability
White	■□	■□	■□	½
	■□	■□	■□	½
Black	■□	□■	■■	½
	□■	■□	■■	½