In ancient times, everyone had their own unique "imprint"
In fact, in ancient times, everyone had their own unique "mark" to prove that you signed and painted it. Of course, this thing is similar to the current signature and signature. In ancient times, sign language was definitely not feasible for people who didn't know how to read. After all, they don't know. So we can only draw things, which is the so-called "painting". However, if knowledge is just a simple bet, it is easy to forge. So later, I used fingerprints.
After all, everyone's fingerprints are different, so as to prevent counterfeiting. Moreover, the production of handprints and seals began to rise in the Yuan Dynasty, because many Mongolian officials could not write any words at that time, so they could use seals instead. Every official has his own unique seal, which can also avoid copying and forgery. At this point, seals have become popular in China, and many illiterate people have to engrave seals to use them!
The function of ancient handprints
In ancient times, handprints were not only used as clues and evidence to detect cases in criminal cases, but also as one of the important evidences to examine cases and prisoners' confessions.
For example, in the well-known Water Margin, when Song Wu interrogated Pan Jinlian and Ximen Qing to poison their brothers, he wrote the confession of Pan Jinlian and Wang Po on paper, and finally pressed the handprint. Through the above cases, we can actually find that the technology of fingerprint as a voucher has been recognized by many people as early as ancient times.
To some extent, in the long history of mankind, fingerprint technology has the same significance as other things invented and created by the ancients, and has made indelible contributions to the development of human social history and the improvement of labor productivity.
According to the fingerprints of ordinary people, make ID cards.
Because the fingerprints on people's hands are mostly in two shapes, namely "dustpan" and "bucket". When issuing certificates, the issuing supervisor will check the hands of the holder. If it is a dustpan, it will be marked with an X, and if it is a bucket, it will be marked with an O..
Ma Hongkui starts with the thumb of his left hand and ends with the little finger of his right hand, according to people's fingerprints. At that time, the ID number was mostly ten "X" and "O". To identify a person, just hold his finger and look at the ten "X" and "O" on the certificate. Ma Hongkui's method did solve many problems at that time.