Blog

Everything on payment systems, card production and certification.

October 5, 2026
The EMV Certificate Chain: How Do CA, Issuer and ICC Certificates Work?
How does a POS terminal know a card can be trusted? A look at EMV PKI, the CA–Issuer–ICC certificate chain, how certificates are prepared during personalization, and the differences between SDA, DDA and CDA.
Certification14 min read
September 28, 2026
What is card personalization? From data prep to the envelope
How does a blank chip card become your bank card? Data preparation, chip personalization, key management and physical production.
Card Personalization11 min read
September 15, 2026
What are issuers and acquirers? How they work in banking and payment systems
What happens behind the scenes when you pay by card? A look at issuer and acquirer roles, the authorization–clearing–settlement flow, and how ISO 8583 and EMV fit in.
Payment Systems6 min read