I have to say that Nan'an's worries are not unreasonable.

In modern times, under such high-tech conditions, there are still tax evasion and counterfeit invoices, let alone now.

Lin Yi thought for a while and said, "We can design a pattern that only we know, so that people outside can't imitate it." ”

Nan'an heard a big one, but he didn't immediately express his opinion, but looked at the people under him.

The master said, "This is a method, but are we going to invite a painter to paint?" ”

Fan Xian on the side shook his head and said, "This method doesn't work, even if it is a complex painting, it can be counterfeited." ”

The master said: "Fan Sibu is reasonable, but if we make the anti-counterfeiting mark good enough, complex enough, they want to counterfeit, but it will take a lot of effort, at least, ordinary people don't have the ability to paint that painting so realistically." ”

Lin Yi said: "You don't need to hire a good painter, I can tell you a method, according to this method, to ensure that it is difficult for them to fake." ”

"I want to hear about it!"

Master and Fan Xian were both very interested, and looked at Lin Yi with curiosity.

Lin Yi looked at Nan'an and said, "Lord Nan, please give me a piece of paper and a pen." ”

Nan An nodded hurriedly, and then ordered his subordinates to get pen, ink, paper, and inkstone for Lin Yi.

After a while, the subordinate took what Lin Yi wanted.

Lin Yi lowered her head and began to draw seriously, and after a while, Lin Yi finished drawing, she put down the pen, put the paper on the table, and said, "Lord Nan, several, please take a look." ”

A few people approached, and they saw a row of closely intertwined vertical strips drawn on the paper.

Several people were confused, and they were all confused.

Fan Xiandao: "Madam, this ...... What is this? ”

Lin Yidao: "This can be called a bar identification code, our invoices, all need to be numbered, as long as we put this number, in such a form, on the invoice, others want to counterfeit, he does not understand this rule." ”

Fan Xiandao: "We can't understand this bar identification code, but they can directly copy our invoices." ”

Lin Yidao: "Although he can counterfeit, but we can write this code in a secret place, when the time comes, the bar code of the invoice must match this code, it is the invoice issued by the imperial court, otherwise it is fake." ”

Lin Yi looked at their bewildered faces and continued: "In addition, we also need to add several other defense marks on the paper, first of all, it is the scratch area, we have to use a thing to cover the information of the award area, after the people get the invoice in their hands, they can use their fingernails to hang off the cover on the award area, you can see whether there is a prize or no prize, and what the award is, if there is a prize, you can go to the household registration department to redeem the prize." ”

Lin Yi paused, and said: "In addition, we also need to add an official seal to this invoice, and in addition, some patterns can be hidden inside the paper, so that they can be revealed under specific circumstances." In addition, the paper we use to make invoices should also be special and good paper materials, so that because the price of paper is expensive, ordinary people can't do such things as fraud. ”

Listening to Lin Yi's words, everyone's worries about invoice fraud can be temporarily eliminated, but there are new doubts in everyone's hearts.