When creating a QR code with alphanumeric mode, you need to use the alphanumeric values of the characters during the encoding process. This table provides a reference for the characters that are supported in alphanumeric mode for QR codes.
0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 A 10 B 11 C 12 D 13 E 14 F 15 G 16 H 17 I 18 J 19 K 20 L 21 M 22 N 23 O 24 P 25 Q 26 R 27 S 28 T 29 U 30 V 31 W 32 X 33 Y 34 Z 35 36 (space) $ 37 % 38 * 39 + 40 - 41 . 42 / 43 : 44