Attention, friends with ID cards! ID cards are not only a status symbol, but also hidden behind each one of them there are many details that you may not have noticed. Do you really know your ID card? Today we're going to reveal the secrets. For example, do you know how to correctly distinguish the front and back of an ID card? Most people think that the front side with the photo is the front side, but in fact it is the opposite. Also, do you know the expiration date of your ID card? Don't wait until the last minute to find out that it has expired. In addition, each of the ID numbers has its own special meaning, including the mysterious last digit "X". Next, let's find out.
Let's talk about the little secrets behind the ID card. You may not expect that even such a small plastic card can carry so much information about personal identity.
The first secret is about the front and back of the ID card. Many people mistakenly think that the side with the photo is the front. In fact, the side with the national emblem is the front, and the side that contains personal information and photos is the negative. Know this little detail and don't take it the other way around next time, especially on important occasions, such as banks or airports, to give people the impression of being professional.
Next, let's talk about the validity period of the ID card. This is a question that many people may ignore a bit. Everyone knows that food has an expiration date, cosmetics have an expiration date, and in fact, ID cards also have an expiration date. Depending on your age group, the validity of the ID card is not the same. If you apply for your first ID card at the age of 16, you need to renew it every 5 years, and if you apply for it before the age of 25, it will be valid for 10 years. When you are between the ages of 25 and 45, the validity period can be extended to 20 years. If you apply for it after the age of 46, it can basically be regarded as a long-term validity. This information is particularly important, don't wait until the end of the day to find out that your ID card is not working, then it will be a big trouble.
Then let's talk about the ID number, which is the most knowledgeable part of the ID card. Each number is not arranged randomly, and each one has a specific meaning. The ID number has a total of 18 digits, and the first 6 digits represent the place where you were born, and the provincial, municipal, and county codes are all in it. The next 8 digits are your date of birth, and you can tell how old you are at a glance. The last two are the serial numbers of the local public security bureau, which can be said to be an additional identification of the region. The next digit is used to distinguish between genders, with odd numbers representing males and even numbers being females.
Finally, let's solve the mystery of the last one. As you may have noticed, some people have an X at the end of their ID card. This X is not placed randomly, it represents 10. This is because the last digit is a check digit that checks if the ID number is incorrect. When the calculated result is 10, it is represented by X. In this way, the total length of the ID card is maintained at 18 digits, which is in line with the standard.
Knowing the secrets of these ID cards, do you think that this small card is actually quite informative? The next time someone asks, you can also show it off and share these unknown little knowledge. After all, in this information age, it's always good to know more, especially the identity that is closely related to you. So, don't underestimate any detail, it may help a lot inadvertently.