Which side of the ID card is the front? We have been wrong for so many years, but actually the side with the head portrait is the back. It took so many years to use it, and it turns out that knowledge has increased today. So what does the X on the ID card mean?
Every Chinese citizen has his or her own ID card, as well as his or her own ID card number. We also found that there will be a letter X behind the ID card number, but we don't know what the meaning of this letter is, so what exactly is hidden in this x?
What is the meaning of the mysterious x on the ID card?
Most people's ID cards are composed of 18 digits, but there are also a few ending with the letter X. What's the meaning of this mysterious x? There are not a few curious netizens about it. Some people say that the people who had registered accounts in that year mistakenly typed it. Some say that the people who had fostered their families just typed it. Some netizens who have big brain holes say that the people who had ID card with X are actually x agents distributed by the country at the grass-roots level! OK, don't guess. In fact, the last digit of ID card is the check code calculated according to the first 17 digits. If the tail number is 0-9, there will be no X. if it is 10, use x instead. This can ensure that the ID number is not many. The check code as the tail number is calculated by the number preparation unit according to the unified formula. If a person's tail number is 0-9, x will not appear, but if the tail number is 10, then 'x' should be used instead, because if 10 is used as the tail number, then the person's ID card will become 19 digits, and the 19 digit number violates the national standard, and the computer application system of our country will not bear it Identify the 19 digit ID number.
'x' is the Roman numeral of 10. Replacing 10 with 'x' can ensure that citizens' identity cards meet national standards. In addition to the difference between the materials and information of the second generation ID card and the former one, the anti-counterfeiting technology has also been improved. In addition, an embedded chip has also been added to read information from the chip, but this is superficial and the public knows it. The second generation ID card is equipped with sensing device and is valid within two kilometers. For example, a criminal appears in a railway station. If the railway station is equipped with an induction system, the identity information of all the people within two kilometers can be known by sending a signal, and the information of the criminal can be screened early from it, so as to catch it. In addition to the above, the second generation identity can also be used as a bus magnetic card. Yesterday, I lost my bus magnetic card. The driver's aunt said that if you have the second generation identity card, you can also brush it. I try, the result is really OK! Can also be used as a bank card, the police revealed a few ways to identify the authenticity of the second generation card.
Do not bend the certificate to avoid high temperature and strong magnetic field
For example, the second-generation certificate can be used to verify whether the reverse shading is made by rainbow, fine and micro printing, whether the color joints are integrated and naturally transited, and whether there is no interface for the color change part; it can also be used to check whether the reverse shading of the certificate contains the micro text string 'jmsfz' by using a magnifying glass. In addition, you can also check the directional photochromic 'Great Wall' pattern on the reverse side of the second generation Certificate (probably located at the registered item 'gender'), see whether the pattern color will change when you observe and rotate left and right at an included angle position, and show three colors of orange, green and purple respectively to determine the authenticity of the certificate.
In addition, the machine-readable information stored in the certificate chip should be read by a special reading machine, which should be consistent with the visual reading information registered on the reverse side of the certificate. Police reminded that when keeping and using the certificate, we should pay attention not to bend the certificate strongly, and avoid contacting with high temperature and strong magnetic field, so as to avoid chip damage and failure.