(PIN = personal identification number, "isikuidentifitseerimisnumber")

olemus
lühike parool mobiiltelefonides, rahandusseadmetes jm,
enamasti koosneb kümnendnumbritest
= a short password in mobile phones, financial devices, etc., mostly consisting of decimal numbers

ülevaateid
https://www.techopedia.com/definition/12128/personal-identification-number-pin

https://en.wikipedia.org/wiki/Personal_identification_number

standardid
https://www.iso.org/obp/ui/#iso:std:iso:9564:-1:ed-4:v1:en

https://www.iso.org/obp/ui/#iso:std:iso:9564:-2:ed-3:v1:en

https://www.iso.org/obp/ui/#iso:std:iso:9564:-4:ed-1:v1:en