olemus
ainult viimase nelja numbrikoha printimine
kviitungitele ja tšekkidele, primaar-kontonumbri varjamiseks;
mõnes õigusruumis on kohustuslik turvameede
= printing only the last four digits on receipts and checks, to hide the primary account number; a mandatory security measure in some jurisdictions

ülevaateid
https://en.wikipedia.org/wiki/PAN_truncation

https://usa.visa.com/dam/VCOM/global/support-legal/documents/bulletin-pan-truncation-cardholder-statements.pdf

https://www.globalpaymentsintegrated.com/en-us/blog/2019/12/10/acceptable-formats-for-truncation-of-primary-account-numbers