Sri Lankans have two types of identifiation numbers.

1. National Identity Card number

2. Sri Lanka Identity Number

3. National Identity Card number

• last two digits of the birth year
• 3 digits for the number of days to birth date
• number for the registration
• V or X character

2. Sri Lanka Identity Number

• 4 digits of the birth year
• 3 digits of number of days the to birth date
• a single digit
• number for the registration