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Nan An said: "Mrs. Ji, according to the current market, even if it is ordinary paper, the price is very expensive, not to mention good paper, if the imperial court uses good paper to make invoices, wouldn't it be another expense?" ”

Lin Yi said: "Paper, can be recycled, if you feel that the process is too complicated, you can make the invoice harder, the invoice has not been damaged, you can exchange for gifts, when the time comes, the recycled invoice, after processing, can be sold to the merchant." ”

"Yes! That's a good idea. When Nan'an heard this, he also thought that this method was good.

Fan Xian was a little worried, and said: "This barcode looks so complicated, when the time comes, we will compare, won't it be even more difficult?" It's still hard for me to look at one, and if I have to look at many of them every day, I'm afraid that the people in our household registration department will have to be blind. ”

Lin Yi thought for a while and said, "Actually, this is also very simple, the black one is one, and the white one is 0, so isn't it easy to recognize?" ”

Fan Xian heard Lin Yi say this, and when he looked at the strange pattern again, he could immediately recognize it.

He looked up in surprise and looked at Lin Yi and said, "Mrs. Ji, I will admit it." ”

Lin Yi nodded slightly, but there was some regret in her heart.

In this era, there are no computers, and naturally there is no way to use scanners, so there is no way to use machines to recognize barcodes.

However, with binary and decimal conversions, it is also possible to deal with those who are fake.

Thinking of the convenience of computers in the future era, Lin Yi felt a little melancholy, if only there were computers here.

It's just that this difficulty is not ordinary......

Lin Yi shook her head, not thinking about this problem for the time being, she looked at Fan Xian and said: "This invoice, there will not only be this one anti-counterfeiting logo, in addition to this barcode, there should also be other anti-counterfeiting logos, this logo, easier to recognize than the barcode, so, generally speaking, if it is determined that the anti-counterfeiting marks are correct, then this invoice should be true." ”

Fan Xian nodded approvingly, he thought about it, and said: "It's just that the anti-counterfeiting pattern marks that Mrs. said just now, I don't know how to design them, and if we take them outside to design, I'm afraid that this anti-counterfeiting mark will leak out, which will be terrible." ”

Lin Yidao: "It is obviously inappropriate to ask an outside paper workshop to process the invoice, and this invoice must be made by a reliable and official organization." ”

At this time, the people present were a little difficult, Nan'an frowned and said: "However, the imperial court does not have talents in papermaking, is it necessary to open a papermaking workshop in order to process this invoice?" Wouldn't the cost increase in this way? ”

Lin Yi glanced at Nan An with some incredulity, this Nan Daren, is he an official or a businessman, how does she think that he has fallen into the eyes of money? I don't even want to invest in this kind of investment, which is really speechless.

Fan Xian looked at Nan'an and said, "Lord Nan, Mrs. Ji is right, the production of this invoice must be in the hands of the government, if you ask a private person to do it, then it is too unsafe." ”

Nan An glared at him and asked, "Then Fan Sibu thinks that a papermaking workshop should be opened in the yamen of our official mansion?" Invite so many people to make paper? Who pays for the wages of these helpers? Is it out of the government's tax money? ”