Author

Max Artemenko

Max Artemenko is the Founder and Chief Payment Systems Architect at Smart Payment Solutions. With more than 12 years of U.S. fintech experience across 23 states, he helps restaurants, retailers, and service businesses select and integrate POS systems, optimize merchant processing, reduce avoidable payment costs, and strengthen fraud and chargeback controls. His articles turn real implementation experience, cost analysis, and operational data into clear, practical guidance for business owners.

All articles

How to Clean and Maintain Your Credit Card Terminals and Touchscreens

Published April 1, 2026 Updated July 27, 2026

How to Clean and Maintain Your Credit Card Terminals and Touchscreens

Quick Summary (TL;DR) Clean your POS terminal in 6 simple steps to avoid costly repairs and keep payments flowing:1. Power...

KDS vs Paper Tickets

Published April 1, 2026 Updated July 27, 2026

KDS vs. Paper Tickets: The Complete Guide to Choosing Your Restaurant Kitchen System

Quick Take: What to Choose Right Now and Why I’ve worked with hundreds of restaurants, and here’s the honest bottom...

Cloud POS vs. Legacy Systems

Published March 31, 2026 Updated July 27, 2026

Cloud POS vs. Legacy Systems (Micros/Aloha): What to Choose for a New Restaurant?

Based on analysis of 50+ cloud POS systems and interviews with 20+ restaurant owners who migrated from legacy systems, this...

What to Do if Your Credit Card Machine Says "Terminal Not Found"

Published March 23, 2026 Updated July 27, 2026

What to Do if Your Credit Card Machine Says “Terminal Not Found”

Quick 5-Minute Diagnostic Checklist Your terminal isn’t talking to your register. Here’s the sequence that fixes 80% of cases. Step...

Override Decline checklist

Published January 15, 2026 Updated July 27, 2026

Merchant Override Decline: What It Means and How to Fix It

The Fast Answer: What to Do Right Now Here’s what you do immediately: Stop trying to force it. Every retry...

Code 05 "Do Not Honor"

Published January 15, 2026 Updated July 27, 2026

Code 05 “Do Not Honor”: What It Means and What Merchants and Customers Should Do

The Problem That Costs Restaurants Thousands: Understanding “Do Not Honor” I’ve watched restaurants lose $2,500+ per month because they didn’t...

Transaction Sent

Published January 15, 2026 Updated July 27, 2026

How to Handle Decline Code 51 (Insufficient Funds) at Your Restaurant

What Does Decline Code 51 Actually Mean? Decline code 51 means one thing: insufficient funds. The cardholder’s bank said “no”...

Transaction Sent

Published January 15, 2026 Updated July 27, 2026

What Does “SEC Violation” Mean on Your Credit Card Terminal?

What Does “SEC Violation” (Code 63) Mean on Your Credit Card Terminal? SEC Violation—or “Security Violation” code 63—is an ISO...

Understanding credit card decline codes and payment authorization errors

Published January 15, 2026 Updated July 27, 2026

The Ultimate Directory of Credit Card Decline Codes for Merchants

Decline codes are two- or three-digit alphanumeric codes returned by the issuing bank, processor, or payment network when a transaction...

Skytab vs Micros

Published December 18, 2025 Updated July 27, 2026

SkyTab vs MICROS (2026): An Honest Restaurant POS Comparison

Side-by-Side: SkyTab vs MICROS Simphony (2026 Comparison Table) Comparison of SkyTab (Shift4) and MICROS Simphony (Oracle) Criterion SkyTab (Shift4) MICROS...

Skytab vs Square

Published December 17, 2025 Updated July 27, 2026

SkyTab vs Square (2026): Which POS Is Better for Growth?

Quick Verdict: SkyTab or Square? (For Those Short on Time) Choose SkyTab if: You run a full-service restaurant with tableside...

Skytab vs Toast

Published December 17, 2025 Updated July 27, 2026

SkyTab vs Toast: Complete POS Systems Comparison for Restaurants in 2026

The restaurant POS systems market is booming—projections show the POS systems sector hitting major growth milestones by 2035. Two names...