Author

Slime

@lee645521797

articles: 22
total claps: 23
top claps: 23
avg read: 3.7 min
active: 2025-08-19 → 2026-04-12

Wiki topics

FIN · Fintech & Banking · 11 💭 · Philosophy of Spirit · 6 📱 · Mobile Development · 4 📚 · Books & Reading · 3 BIZ · Business Strategy · 3 CRY · Crypto & Web3 · 3 🌐 · Web Development · 1 ⏱️ · Productivity · 1

Top tags

#emv-l2 ·10 #emv ·7 #card-payment ·6 #emvco ·4 #blockchain ·3 #oda ·3 #cad ·3 #payments ·3 #dads ·2 #flutter-ui ·2

ART MDA TCH DSN

SL Slime

Flutter — UI Design Library Decoupling: Progress and Roadmap

In the current Flutter architecture, the Material (Android) and Cupertino (iOS) UI libraries are bundled together with the core framework…

Dec 26, 2025 · 5 min read · 23 claps #flutter-update #flutter-ui-design #flutter-ui

Flutter — UI Design Library Decoupling: Progress and Roadmap

ECO

SL Slime

Blockchain (2) — Blockchain Structure

In today’s world of increasingly frequent international trade, cross-border payments have become a crucial link in the smooth flow of the…

Sep 13, 2025 · 8 min read · 0 claps #blockchain #web3 #blockchain-structure

ECO

SL Slime

EMV L2 (6) — DDA Authentication for ODA

In the previous article, we discussed SDA (Static Data Authentication).

Sep 21, 2025 · 6 min read · 0 claps #emv-l2 #dads #emv

SL Slime

EMV L2 (6) — SDA Authentication for ODA

The meaning of SDA is Static Data Authentication.

Sep 14, 2025 · 6 min read · 0 claps #emv #emvco #oda

SL Slime

EMV L2 (7) — CDA Authentication for ODA

The first three steps of CDA (retrieving the CA public key, recovering the issuer public key, and recovering the IC card public key) are…

Sep 27, 2025 · 5 min read · 0 claps #emv-l2 #cad #cda-authentication

ECO

SL Slime

Blockchain (4) — UTXO

What is the UTXO Model?

Sep 27, 2025 · 5 min read · 0 claps #blockchain #utxo #utxo-model

ECO

SL Slime

EMV L2 (10) — Terminal Risk Management

Terminal risk management is that portion of risk management performed by the terminal to protect the acquirer, issuer, and system from…

Oct 26, 2025 · 4 min read · 0 claps #emvco #emv-l2 #terminal-risk-management

ECO

SL Slime

EMV L2 (12) — Online Processing and Issuer Script Processing

As mentioned earlier, after the card behavior analysis, the terminal determines — based on the analysis results — whether the transaction…

Nov 09, 2025 · 4 min read · 0 claps #emv-l2 #transaction-completion #online-processing

EMV L2 (12) — Online Processing and Issuer Script Processing

TCH

SL Slime

Flutter — Integrate the network framework Retrofit

In today’s mobile world, almost every Flutter application needs to communicate with backend services through REST APIs. However, the…

Oct 15, 2025 · 4 min read · 0 claps #flutter #flutter-retrofit #flutter-network

Flutter — Integrate the network framework Retrofit

TCH

SL Slime

Flutter — Fixes the WebView Click Issue on iOS 26

As everyone knows, Flutter’s WebView has had click issues on iOS 26.

Dec 15, 2025 · 4 min read · 0 claps #flutter-webview #flutter-click-issues #webview-click

Flutter — Fixes the WebView Click Issue on iOS 26

ECO LIF

SL Slime

Blockchain — Ethereum vs Solana

Ethereum is often regarded as a decentralized and secure “world computer”, focusing on stability and reliability.

Oct 18, 2025 · 4 min read · 0 claps #blockchain #ethereum #solanas

ECO SPR

SL Slime

EMV L2 (11) — Card Behavior Analysis

Card behavior analysis purpose: The IC card can perform its own risk management to prevent the issuer from being exposed to fraud or…

Nov 03, 2025 · 4 min read · 0 claps #card-behavior-analysis #emv-l2 #emvco

ECO

SL Slime

Payment — Tap to Pay on iPhone Expands to Five European Countries

According to Apple’s official announcement, the newly added countries and their respective financial partners for Tap to Pay on iPhone are…

Oct 24, 2025 · 3 min read · 0 claps #payments #pay-to-tap #tap-to-pay-iphone

Payment — Tap to Pay on iPhone Expands to Five European Countries

MDA ECO SPR

SL Slime

EMV L2 (4) — Read Application Data

The purpose of reading application data is to obtain the data required for subsequent transactions from the card, in order to complete…

Aug 27, 2025 · 3 min read · 0 claps #emv-l2 #card-payment #read-application-data

SPR

SL Slime

EMV L2 (5) — Offline Data Authentication

The purpose of Offline Data Authentication (ODA) is to verify the authenticity of the card and ensure that the critical data on the card…

Aug 28, 2025 · 3 min read · 0 claps #emv-l2 #emv #offline-data-auth

ECO HUM SPR

SL Slime

EMV L2 (9) — Cardholder Verification

The purpose of Cardholder Verification is to confirm that the person currently using the card is the individual authorized by the card…

Oct 18, 2025 · 3 min read · 0 claps #emv-l2 #cardholder-verification #emv-l2-process

SPR

SL Slime

EMV L2 (3) — Application Initialization

1. Purpose of Application Initialization

Aug 25, 2025 · 3 min read · 0 claps #emv-l2 #emv-chip #cards

SPR

SL Slime

EMV L2 (8) — Processing Restrictions

The purpose of Processing Restrictions is to determine the degree of compatibility between the application in the terminal and the…

Oct 12, 2025 · 2 min read · 0 claps #emv-l2-flow #processing-restrictions #emv-l2

ECO

SL Slime

Payment — What is Apple’s Tap to Pay ?

No terminal. No reader. Just an iPhone.

Apr 01, 2026 · 2 min read · 0 claps #pay-to-tap #apple-tap-to-pay #soft-pos

ECO

SL Slime

Payment — Why PSPs are Bringing Risk in House

For years, there was a pretty clear segregation in payments: PSPs processed payments and fraud vendors, well, managed fraud and risk

Apr 12, 2026 · 2 min read · 0 claps #psp #risk-management #payment-gateway

Payment — Why PSPs are Bringing Risk in House

ECO

SL Slime

EMV (1) — Basic

Introduction to the EMV Organization

Aug 19, 2025 · 2 min read · 0 claps #payments #emv #l2

MDA TCH DSN

SL Slime

Flutter — Tencent releases TDesign library

Tencent TDesign UI component library of Flutter, suitable for use in mobile projects.

Dec 29, 2025 · 1 min read · 0 claps #flutter-ui #flutter-design #flutter-widget