Sourabh kaushik📱💻: Android/POS Developer – Medium

Sourabh kaushik📱💻: Android/POS Developer

Sourabh kaushik📱💻: Android/POS Developer

Understanding Fintech Card Embossing and Transaction Processing

Note: Details may very country wise and processor wise

3 min readMar 18, 2024

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Understanding Fintech Card Embossing and Transaction Processing

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Sourabh kaushik📱💻: Android/POS Developer

Sync in a Blink: Exploring the Magic of Real-Time Data Updates in Firestore

Introduction:

9 min readJun 8, 2023

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Sync in a Blink: Exploring the Magic of Real-Time Data Updates in Firestore

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Sourabh kaushik📱💻: Android/POS Developer

Key management schemes in POS : EMV Transaction Flow (Part-4)

MK/SK , DUKPUT, 3DES etc….

3 min readJun 7, 2023

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Key management schemes in POS : EMV Transaction Flow (Part-4)

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Sourabh kaushik📱💻: Android/POS Developer

Using APDU Commands: EMV Transaction Flow (Part-3)

Terminal -> Card

5 min readMay 31, 2023

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Using APDU Commands: EMV Transaction Flow (Part-3)

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Sourabh kaushik📱💻: Android/POS Developer

AID in Cards: EMV Transaction Flow (Part-2.1)

What is AID?

2 min readMay 31, 2023

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AID in Cards: EMV Transaction Flow (Part-2.1)

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Sourabh kaushik📱💻: Android/POS Developer

Understanding APDU Commands: EMV Transaction Flow (Part -2)

Introduction:

15 min readMay 30, 2023

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Understanding APDU Commands: EMV Transaction Flow (Part -2)

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Sourabh kaushik📱💻: Android/POS Developer

Understanding Interfaces : EMV Transaction Flow (Part -1)

Introduction:

5 min readMay 30, 2023

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Understanding Interfaces : EMV Transaction Flow (Part -1)

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Sourabh kaushik📱💻: Android/POS Developer
in
ProAndroidDev

Understanding Resource Selection in AndroidApps with Multiple Modules

Introduction:

3 min readMay 29, 2023

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Understanding Resource Selection in AndroidApps with Multiple Modules

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Sourabh kaushik📱💻: Android/POS Developer

Sourabh kaushik📱💻: Android/POS Developer

Expert in pos development, banking systems, and digital wallets. Meticulous problem-solver. Actively contributes to the Android community. 🚀

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