# Blog · L0t

> L0t — Recent headlines.

- [Debit Card Fees Explained: Apple Pay PINless vs Signature Saves 11 Cents](https://l0t.me/blog/debit-card-fees-explained-apple-pay-pinless-vs-signature-saves-11-cents.php/index.md)
- [Airline Ticket Fees: $400 Fare Triggers $11.90 Surcharge vs Debit](https://l0t.me/blog/airline-ticket-fees-400-fare-triggers-1190-surcharge-vs-debit.php/index.md)
- [2026 FedNow 18ms Lab Finality vs US Cards at Checkout](https://l0t.me/blog/2026-fednow-18ms-lab-finality-vs-us-cards-at-checkout.php/index.md)
- [FedNow RfP $35 Break-Even vs $100 Billion Card Fees](https://l0t.me/blog/fednow-rfp-35-break-even-vs-100-billion-card-fees.php/index.md)
- [Why Mobile Wallet Checkouts Fail and What WCAG 2.2 AA Fixes](https://l0t.me/blog/why-mobile-wallet-checkouts-fail-and-what-wcag-22-aa-fixes.php/index.md)
- [Visa's 2.6% Fallback: Interchange Mechanics Behind 2026 Fees](https://l0t.me/blog/visas-26-fallback-interchange-mechanics-behind-2026-fees.php/index.md)
- [The 120-Day Chargeback Window: A Liability Allocation Rule](https://l0t.me/blog/the-120-day-chargeback-window-a-liability-allocation-rule.php/index.md)
- [Visa's Solana USDC Pilot: Sub-Minute Finality, Hidden Drag](https://l0t.me/blog/visas-solana-usdc-pilot-sub-minute-finality-hidden-drag.php/index.md)
- [50ms Latency Cliff: 2026 Risk Checks, Net Financial Outcomes](https://l0t.me/blog/50ms-latency-cliff-2026-risk-checks-net-financial-outcomes.php/index.md)
- [FedNow Fraud: Four Remedies, One Works Before Settlement](https://l0t.me/blog/fednow-fraud-four-remedies-one-works-before-settlement.php/index.md)
- [Reg II 2026 Debit: Fed Cost Trail, Square-Adyen, Caveats](https://l0t.me/blog/reg-ii-2026-debit-fed-cost-trail-square-adyen-caveats.php/index.md)
- [The 24¢ Debit: 21¢ Cap, Routing Math, and 2025's Real Cost](https://l0t.me/blog/the-24-debit-21-cap-routing-math-and-2025s-real-cost.php/index.md)
- [FedNow's 30-Second Finality: 42% Chargeback Drop, $100 Fraud Cliff](https://l0t.me/blog/fednows-30-second-finality-42-chargeback-drop-100-fraud-cliff.php/index.md)
- [WooCommerce Auto-Updates Risk PCI Compliance and Revenue](https://l0t.me/blog/woocommerce-auto-updates-risk-pci-compliance-and-revenue.php/index.md)
- [Visa 2026: Tokenized Wallet Push Only Margin-Preserving Route](https://l0t.me/blog/visa-2026-tokenized-wallet-push-only-margin-preserving-route.php/index.md)
- [2026 Payments: FedNow Fees vs Card Costs for Merchants](https://l0t.me/blog/2026-payments-fednow-fees-vs-card-costs-for-merchants.php/index.md)

Canonical: https://l0t.me/blog/