satu_control_char {hetu} | R Documentation |
Finnish Unique Identification Number Control Character Calculator
Description
Calculate a valid control character for an incomplete Finnish Unique Identification Number (FINUID, or sähköinen asiointitunnus SATU).
Usage
satu_control_char(pin, print.full = FALSE)
Arguments
pin |
An incomplete FINUID that has 8 first numbers. |
print.full |
Should the function print only the whole FINUID-number (TRUE) or only the control character (FALSE). Default is FALSE. |
Details
This method of calculating the control character was devised by mathematician Erkki Pale (1962) to detect input errors but also to detect errors produced by early punch card machines. The long number produced by writing the birth date and the personal number together are divided by 31 and the remainder is used to look up the control character from a separate table containing alphanumeric characters except letters G, I, O, Q and Z.
The method of calculating the control character does not need century character and therefore the function has an option to omit it.
Value
Control character, either a number 0-9 or a letter (length 1 character). If parameter print.full is set to TRUE, the function returns a complete FINUID / SATU number (length 9 characters).
Author(s)
Pyry Kantanen
See Also
For more detailed information about FINUID, see Finnish Digital and population data services agency website: https://dvv.fi/en/citizen-certificate-and-electronic-identity
Examples
# The first assigned FINUID number, 10000001N.
satu_control_char("10000001")