The ID number (ID number) is an important identification used by governments to identify citizens. The rules and formats for generating ID numbers in different countries vary, and usually contain information such as date of birth, gender, area code, and verification code. The following are the rules and sample examples for the generation of ID numbers in some countries： --- ### 1. **China** -**Format**: 18 digits -**Generation rules**： -The first 6 digits: address code (province, city, district and county) -7th-14th place: date of birth (YYYYMMDD) -Digits 15-17: Sequence code (odd number means male, even number means female) -18th digit: check code (calculated based on the first 17 digits) -**Example**:`110105199003071234` --- ### 2. **United States (social Security number, SSN)** -**Format**:`XXX-XX-XXXX` (9 digits) -**Generation rules**： -First 3 digits: area code -Middle 2 digits: group code -Last 4 digits: serial number -**Example**:`123-45-6789` --- ### 3. **India (Aadhaar number)** -**Format**: 12 digits -**Generation rules**: Generate a unique number based on personal biological information (such as fingerprint, iris) -**Example**: `1234 5678 9012` --- ### 4. **Japan (My Number)** -**Format**: 12 digits -**Generation rules**: Randomly generated, uniquely identify citizens -**Example**:`123456789012` --- ### 5. **South Korea (Resident registration number)** -**Format**:`YYYYMMDD-XXXXXXXX' (13 digits) -**Generation rules**： -The first 6 digits: date of birth (YYYYMMDD) -The last 7 digits: gender code (1-2 is male, 3-4 is female) + other information -**Example**:`900101-1234567` --- ### 6. **United Kingdom (National Insurance number, NINO)** -**Format**: 'AB 12 34 56 C` (combination of letters and numbers) -**Generation rules**: The first two letters, followed by 6 digits, the last letter -**Example **: `AB 12 34 56 C` --- ### 7. **Germany (ID number)** -**Format**: 9 digits -**Generation rules**: Generated based on date of birth and regional information -**Example**:`123456789` --- ### 8. **France (INSEE number)** -**Format**: 15 digits -**Generation rules**： -Top 1: gender (1 is male, 2 is female) -2nd-7th place: date of birth (YYMMDD) -8th-10th place: place of birth code -Digits 11-13: sequence code -Last 2 digits: check code -**Example**:`1890795123456` --- ### 9. **Canada (social insurance number, SIN)** -**Format**:`XXX-XXX-XXX` (9 digits) -**Generation rules**: Randomly generated, uniquely identify citizens -**Example**: `123-456-789` --- ### 10. **Australia (tax ID, TFN)** -**Format**: 9 digits -**Generation rules**: Randomly generated, uniquely identify citizens -**Example**:`123456789` --- ### Precautions： -The ID number is sensitive personal information, so you need to pay attention to privacy protection when actually using it. -The above examples are fictitious and are only used to illustrate the format and rules. If you have a more in-depth interest in the rules for generating ID numbers in a certain country, you can explore it further!