10 pages
Security
Authentication, certifications, PCI compliance, and secure system design
L3 Certification Paths Are Not Created Equal: C-TAP, SmartPOS, and SoftPOS
Payment Tokenization: How Tokens Replace PANs Across the Payment Chain
POS Terminal Environment Classifications: Attended, Semi-Attended, and Unattended
Prompt Engineering for POS: Treating LLM Inputs as First-Class Architecture
DUKPT Key Derivation: Technical Reference for POS Systems
PIN Translation: Bridging Cryptographic Worlds Inside the HSM
EMV Cryptograms: How ARQC Prevents Fraud
RSA Algorithm: Theory and Implementation
IPEK Derivation & Terminal Key Injection
EMV for Developers: What You Really Need to Know