QR Code Access Control Converter: TM-66A 1, the character selection: chrysanthemum type character rotary dial 2, machine with word of 66 Large english letters(26): A-Z Small number(10): 0-9 Large Numbers(10): 0-9 Small symbols(8): ＆‵﹐.–／﹙﹚ Large symbols(10): .－∕（）：NO元￥ Modify flatten(2): ■■ 3, characters: meet ISO standard international credit card use special characters,Applicable standards of PVC card, that is 85.5mm x 55mm 4, interval of 2, …