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Online Payment Systems in
Turkish E-Commerce: Merchant
Experiences
03.10.2013 Boğaziçi University E-Commerce Lecture
22.08.2013 Yemek Sepeti Payment Systems Seminar
01.06.2013 IBS E-Commerce Micro MBA
23.03.2013 IBS E-Commerce Micro MBA
13.02.2013 Limango Payment Systems Seminar
12.12.2012 Webrazzi Payment Systems’12 Conference
26.05.2012 Bilgi University E-Commerce Academy Seminar
1
@hakanerdogan!
2
1981: Born
in Denizli
2005: Graduated
from Izmir
Institute of
Technology,
Computer
Engineering
2005: Sun
Certified Java
Programmer
1.4
2005:
Consultancy,
Java & JEE
Software
Development
2007:
GittiGidiyor /
eBay, SOA
Infrastructure,
Payment
Systems
2008-2012:
GittiGidiyor / eBay,
Software
Development
Manager
07.2012 +
Otto-Group
Turkey – IT
Director
3
Payment Systems Experience, Since 2007!
Credit / Debit Cards :
-  EST / Asseco
-  Garanti Bank GVP
-  YKB Posnet
EFT / Wire Transfer:
-  Integration of
Internet Banking
Introduction
Overview of Payment Systems in Turkey
One Step Back Before Start: Shopping Steps
Card Payment Systems: Statistics
Shopping Steps: Card Payment (Checkout) Page
Distribution of Payment Errors and Error Messages to Display
Payment and Refund Tests
Proactive Monitoring: Payment and Refund
New Feature Development ve 4 Check Points
Fraud, Chargeback and Security
No Response Payments
3D Secure
Alternative Payment Systems
Questions ?
4
Agenda!
Breakdown of Payment Systems in Turkey!
5
Breakdown of Payment Systems in Turkey: Alternative Payment Systems and Their Details [Analysis]:
http://www.odemesistemleri.org/turkiyedeki-odeme-sistemlerinin-kirilimi-alternatif-odeme-sistemleri-ve-detaylari-
analiz/
Breakdown of Payment Systems in Turkey!
6
The Internet Card Payment Transactions!
7
BKM – The Internet Card Payment Transactions:
http://www.bkm.com.tr/istatistik/sanal_pos_ile_yapilan_eticaret_islemleri.asp
8
One Step Back Before Start: Shopping Steps!
!
Basket – Product
Selection
Shipment /
Invoice
Address,
Voucher
Selection
Payment
Type
Selection &
Checkout
9
One Step Back Before Start: Shopping Steps!
Shopping Card and Payment Steps Design [1/6] :
http://www.odemesistemleri.org/alisveris-sepeti-ve-odeme-adimlari-tasarimi-16/
10
One Step Back Before Start: Shopping Steps!
Basket – Product
Selection
Shipment /
Invoice Address,
Voucher
Selection
Payment
Type
Selection &
Checkout
SUCCESS,
CONVERSION
SHOPPING CART
ABANDONMENT
%65+ *
GOAL: To Increase Conversion
•  Minimum page transition
•  Minimum click
•  Minimum distracting
elements
•  Maximum information
•  “Above the fold” concept
* http://www.ritholtz.com/blog/2012/05/shopping-cart-abandonment/
* http://baymard.com/lists/cart-abandonment-rate
•  56.53 million credit cards *
•  96.64 million debit cards *
•  2.27 million POS *
•  30.67 billion TL card payment transactions by the end of 2012
•  80-90 % of payments are done by credit / debit cards
11
Card Payment Systems: Statistics!
* http://www.bkm.com.tr/istatistik/pos_atm_kart_sayisi.asp By end of August 2013
12
Shopping Steps: Card Payment Page!
Card Payment (Checkout) Page [2/6] :
http://www.odemesistemleri.org/kartli-odeme-sayfasi-26/
GOAL: To Increase Conversion
•  Minimum page transition
•  Minimum click
•  Minimum distracting
elements
•  Maximum information
•  “Above the fold” concept
13
Shopping Steps: Card Payment Page!
Syntactic and Semantic
Validations
•  Length validation
•  Numeric input validation
•  3DS supported card validation
•  Debit kart installment validation
•  BIN validation and not existing
Virtual POS – installment
validation
•  …
e.g.: Card Number
•  15 or 16 digits,
•  CVV/CVC 3 or 4 digits,
numeric
•  Luhn Algorithm check
Syntactic and Semantic Validations [3/6] :
http://www.odemesistemleri.org/syntactic-ve-semantic-validasyonlar-36/
20 – 25 % of payment requests are failed
Roughly 1/3 of those failed payment requests are caused by
“insufficient funds – not enough limit” (33 – 38 %)
Other Payment Errors:
•  General declined (15 – 18 %)
•  Invalid expire year or month (10 – 12 %)
•  Invalid CVV / CVC (2 – 3 %)
•  3DS not supported by card / bank
•  Card does not support installment
•  Can not proceed, card is not allowed to internet payments
•  Technical problems, …
14
Distribution of Payment Errors!
Your card number is not valid, …
Your expire year and month is not valid, …
Your CVV / CVC2 is not valid, …
Your card does not support installment …
You can not make installment payments with debit cards, …
Your card limit is below the payment amount, …
15
Error Messages to Display!
Your bank does not proceed the payment request, …
Your card/bank does not support 3DS payments, …
Order ID is already used before, …
The items you are getting to buy are out of stock, …
Payment transaction is failed, …
…
16
Error Messages to Display!
Classification of Payment Errors and Error Messages to Display [4/6] :
http://www.odemesistemleri.org/odeme-hatalarinin-tasnifi-ve-onyuze-cikarilmasi-gereken-mesajlar-46/
17
Payment and Refund Tests!
Refund Tests
•  100 TL’lik siparişin tamamının iadesi ve iptali
•  20 TL’lik siparişin tamamının kısmi iadesi
•  20 TL’lik siparişin 5 TL’sinin kısmi iadesi
•  20 TL’lik siparişin ikinci kez 10 TL’sinin kısmi
iadesi
•  100 TL’lik siparişin iadesinin iptali J
•  …
Total 100 TL
20
TL
30
TL
50
TL
32 x Virtual POS x … ~ 100+ payment tests
Payment systems do not have a tolerance for a mistake
You have to go live with 0 bug
It’s better not to accept payment than accepting payment with bug
that you haven’t realize (it may be too late when you realize the
bug)
If there is a 2 minute outage, the alarm bells start to ring
Payment systems for the health of the heart and blood vessels
Maximum adrenaline J
18
Payment and Refund Tests!
Payment and Refund Tests [5/6] :
http://www.odemesistemleri.org/odeme-ve-iade-testleri/
Now is Wednesday 02:20 pm.
Considering last week Wednesday between 00:00 – 02:20 pm
and last 4 week average:
•  How many payment transactions requested ?
•  What about the amout of those transactions ?
•  What about the breakdown of those transactions based on
Virtual POS’ses and card families?
•  What about the success and failure rates ?
•  What about the distribution of payment errors ?
•  What about the standart deviation of those transactions ?
•  …
19
Proactive Monitoring: Payment and Refund!
Proactive Monitoring [6/6] :
http://www.odemesistemleri.org/proactive-monitoring/
Daytime
•  Based on Virtual POS’ses
o  The count of payment transactions in last 2 minutes > 0 ?
o  The count of payment transactions in last 3 minutes
> (last 4 week average) x 0.85 ?
o  The amount of payment transactions in last 5 minutes
> (last 4 week average) x 0.85 ?
o  The count of payment errors in last 10 minutes
> (last 4 week average) x 0.85 ?
At Night
•  Based on Virtual POS’ses
o  …
20
Proactive Monitoring: Payment and Refund!
Problems should be identified immediately with proactive
monitoring
It should be a learning system
If a Virtual POS is down, than it should be disabled and those
bank cards payment requests should be redirected to default
Virtual POS automatically
Users should be informed
• ‘Currently it is not possible to process an installment payment
with Y bank cards, you may pay without installment’
21
Proactive Monitoring: Payment and Refund!
22
Proactive Monitoring: Payment and Refund!
Currently it is not
possible to process
an installment
payment with
Akbank cards, you
may pay without
installment
ü  Shopping Steps
ü  Card Payment Page (minimalist approach, the maximum information)
ü  Syntactic and Semantic Validations
ü  Distiribution of Payment Errors
ü  Payment Errors to Display
ü  Payment and Refund Tests
ü  Proactive Monitoring
23
Status Quo!
4- Is there a payment problem ?
24
New Feature Development ve 4 Check Points!
1- Is there a Fraud risk ?
2- Is there a refund problem?
3- Is there an accounting problem?
Fraud detection, fraud prevention and monitoring mechanisms
•  User’s history and profile
•  Item’s price
•  Online item / offline item
•  Payment location, IP address and cookie information
•  Other cards used by the user
•  Cardholder name surname vs user membership name surname
•  Shipment address vs membership address information
•  Payment errors encountered by user
•  Payment fail / success statistics of user
•  …
25
Fraud and Chargeback!
Fraud Capturing, Calculations and Prevention Methods:
http://www.odemesistemleri.org/fraud-sahtecilik-yakalama-hesaplama-ve-onleme-yollari/
Fraud detection, fraud prevention and monitoring mechanisms
•  Rule sets
•  Learning systems
•  Data mining considering previous data
•  Potential risk algorithms
Chargeback Flow
•  Chargeback request
•  The appeals process
•  Returning/rejecting the chargeback request
26
Fraud and Chargeback!
Personal Security
• Using known and safe shopping sites
• Considering key-logger in public internet
• Using 3D Secure
• Using virtual cards
• …
Corporate Security
• Not storing card information
• PCI – DSS
• Audit
• Penetration tests
• …
27
Security!
28
No Response Payments!
Models:
• 3D-PAY
• 3D-PAY OOS (3D-PAY HOSTING)
• 3D
Verification:
• Half 3D Secure
• Full 3D Secure
29
3D Secure!
3D Secure with Relevant Q & A:
http://www.odemesistemleri.org/3d-secure-ile-ilgili-tum-merak-ettikleriniz/
30
Alternative Payment Systems!
•  Breakdown of Payment Systems in Turkey: Alternative Payment Systems and Their Details [Analysis]:
http://www.odemesistemleri.org/turkiyedeki-odeme-sistemlerinin-kirilimi-alternatif-odeme-sistemleri-ve-detaylari-analiz/
•  3D Secure with Relevant Q & A:
http://www.odemesistemleri.org/3d-secure-ile-ilgili-tum-merak-ettikleriniz/
•  What is BKM Express, Features and What Are the Pros, Why It is Preferred:
http://www.odemesistemleri.org/bkm-express-nedir-ozellikleri-ve-artilari-nelerdir-neden-tercih-edilmelidir/
•  Alternative Mobile Payment System with a QR Code, PARAKOD [Interview]:
http://www.odemesistemleri.org/qr-kod-ile-calisan-alternatif-mobil-odeme-sistemi-parakod/
•  PayU - Virtual POS, Fraud Monitoring and Prevention Services [Interview]:
http://www.odemesistemleri.org/payu-sanal-pos-ve-fraud-filtreleri-hizmeti-roportaj/
•  PayPal and Turkey Payment Systems Market [Interview]:
http://www.odemesistemleri.org/paypal-ve-turkiye-odeme-sistemleri-pazari-roportaj/
•  Mobile Shopping and Payment Platform Mobilexpress [Interview]:
http://www.odemesistemleri.org/mobil-alisveris-ve-odeme-platformu-mobilexpress-roportaj/
31
Articles may be of Interest!
•  İninal Prepaid Card User Experience:
http://www.odemesistemleri.org/on-odemeli-ininal-kart-kullanici-deneyimi/
•  Fraud Capturing, Calculations and Prevention Methods:
http://www.odemesistemleri.org/fraud-sahtecilik-yakalama-hesaplama-ve-onleme-yollari/
•  Shopping Cart and Card Payment Systems Experience - Article Series:
http://www.odemesistemleri.org/alisveris-sepeti-ve-kartli-odeme-sistemi-tecrubeleri-yazi-dizisi/
•  Shopping Card and Payment Steps Design [1/6]:
http://www.odemesistemleri.org/alisveris-sepeti-ve-odeme-adimlari-tasarimi-16/
•  Card Payment (Checkout) Page [2/6]:
http://www.odemesistemleri.org/kartli-odeme-sayfasi-26/
•  Syntactic and Semantic Validations [3/6]:
http://www.odemesistemleri.org/syntactic-ve-semantic-validasyonlar-36/
•  Classification of Payment Errors and Error Messages to Display [4/6]:
http://www.odemesistemleri.org/odeme-hatalarinin-tasnifi-ve-onyuze-cikarilmasi-gereken-mesajlar-46/
32
Articles may be of Interest!
•  Payment and Refund Tests [5/6]:
http://www.odemesistemleri.org/odeme-ve-iade-testleri/
•  Proactive Monitoring [6/6]:
http://www.odemesistemleri.org/proactive-monitoring/
•  Everything About Credit Card Payments and Cash Price with Installment:
http://www.odemesistemleri.org/kredi-karti-ile-odeme-ve-pesin-fiyatina-taksit-hakkinda-bilmedikleriniz/
•  Setting up a Payment Systems Infrastructure: Credit Card Channel:
http://www.odemesistemleri.org/odeme-sistemi-altyapisi-kurmak-kredi-karti-kanali/
•  Setting up a Payment Systems Infrastructure: EFT / Wire Transfer Channel:
http://www.odemesistemleri.org/odeme-sistemi-altyapisi-kurmak-efthavale-kanali/
33
Articles may be of Interest!
?
34
Questions ?!
Thank You!
35
@hakanerdogan
hakan.erdogan@limango.com.tr
http://www.odemesistemleri.org
@odemesistemleri

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Online Payment Systems in Turkish E-Commerce: Merchant Experiences - 2013-10-03-EN

  • 1. Online Payment Systems in Turkish E-Commerce: Merchant Experiences 03.10.2013 Boğaziçi University E-Commerce Lecture 22.08.2013 Yemek Sepeti Payment Systems Seminar 01.06.2013 IBS E-Commerce Micro MBA 23.03.2013 IBS E-Commerce Micro MBA 13.02.2013 Limango Payment Systems Seminar 12.12.2012 Webrazzi Payment Systems’12 Conference 26.05.2012 Bilgi University E-Commerce Academy Seminar 1
  • 2. @hakanerdogan! 2 1981: Born in Denizli 2005: Graduated from Izmir Institute of Technology, Computer Engineering 2005: Sun Certified Java Programmer 1.4 2005: Consultancy, Java & JEE Software Development 2007: GittiGidiyor / eBay, SOA Infrastructure, Payment Systems 2008-2012: GittiGidiyor / eBay, Software Development Manager 07.2012 + Otto-Group Turkey – IT Director
  • 3. 3 Payment Systems Experience, Since 2007! Credit / Debit Cards : -  EST / Asseco -  Garanti Bank GVP -  YKB Posnet EFT / Wire Transfer: -  Integration of Internet Banking
  • 4. Introduction Overview of Payment Systems in Turkey One Step Back Before Start: Shopping Steps Card Payment Systems: Statistics Shopping Steps: Card Payment (Checkout) Page Distribution of Payment Errors and Error Messages to Display Payment and Refund Tests Proactive Monitoring: Payment and Refund New Feature Development ve 4 Check Points Fraud, Chargeback and Security No Response Payments 3D Secure Alternative Payment Systems Questions ? 4 Agenda!
  • 5. Breakdown of Payment Systems in Turkey! 5 Breakdown of Payment Systems in Turkey: Alternative Payment Systems and Their Details [Analysis]: http://www.odemesistemleri.org/turkiyedeki-odeme-sistemlerinin-kirilimi-alternatif-odeme-sistemleri-ve-detaylari- analiz/
  • 6. Breakdown of Payment Systems in Turkey! 6
  • 7. The Internet Card Payment Transactions! 7 BKM – The Internet Card Payment Transactions: http://www.bkm.com.tr/istatistik/sanal_pos_ile_yapilan_eticaret_islemleri.asp
  • 8. 8 One Step Back Before Start: Shopping Steps! ! Basket – Product Selection Shipment / Invoice Address, Voucher Selection Payment Type Selection & Checkout
  • 9. 9 One Step Back Before Start: Shopping Steps! Shopping Card and Payment Steps Design [1/6] : http://www.odemesistemleri.org/alisveris-sepeti-ve-odeme-adimlari-tasarimi-16/
  • 10. 10 One Step Back Before Start: Shopping Steps! Basket – Product Selection Shipment / Invoice Address, Voucher Selection Payment Type Selection & Checkout SUCCESS, CONVERSION SHOPPING CART ABANDONMENT %65+ * GOAL: To Increase Conversion •  Minimum page transition •  Minimum click •  Minimum distracting elements •  Maximum information •  “Above the fold” concept * http://www.ritholtz.com/blog/2012/05/shopping-cart-abandonment/ * http://baymard.com/lists/cart-abandonment-rate
  • 11. •  56.53 million credit cards * •  96.64 million debit cards * •  2.27 million POS * •  30.67 billion TL card payment transactions by the end of 2012 •  80-90 % of payments are done by credit / debit cards 11 Card Payment Systems: Statistics! * http://www.bkm.com.tr/istatistik/pos_atm_kart_sayisi.asp By end of August 2013
  • 12. 12 Shopping Steps: Card Payment Page! Card Payment (Checkout) Page [2/6] : http://www.odemesistemleri.org/kartli-odeme-sayfasi-26/ GOAL: To Increase Conversion •  Minimum page transition •  Minimum click •  Minimum distracting elements •  Maximum information •  “Above the fold” concept
  • 13. 13 Shopping Steps: Card Payment Page! Syntactic and Semantic Validations •  Length validation •  Numeric input validation •  3DS supported card validation •  Debit kart installment validation •  BIN validation and not existing Virtual POS – installment validation •  … e.g.: Card Number •  15 or 16 digits, •  CVV/CVC 3 or 4 digits, numeric •  Luhn Algorithm check Syntactic and Semantic Validations [3/6] : http://www.odemesistemleri.org/syntactic-ve-semantic-validasyonlar-36/
  • 14. 20 – 25 % of payment requests are failed Roughly 1/3 of those failed payment requests are caused by “insufficient funds – not enough limit” (33 – 38 %) Other Payment Errors: •  General declined (15 – 18 %) •  Invalid expire year or month (10 – 12 %) •  Invalid CVV / CVC (2 – 3 %) •  3DS not supported by card / bank •  Card does not support installment •  Can not proceed, card is not allowed to internet payments •  Technical problems, … 14 Distribution of Payment Errors!
  • 15. Your card number is not valid, … Your expire year and month is not valid, … Your CVV / CVC2 is not valid, … Your card does not support installment … You can not make installment payments with debit cards, … Your card limit is below the payment amount, … 15 Error Messages to Display!
  • 16. Your bank does not proceed the payment request, … Your card/bank does not support 3DS payments, … Order ID is already used before, … The items you are getting to buy are out of stock, … Payment transaction is failed, … … 16 Error Messages to Display! Classification of Payment Errors and Error Messages to Display [4/6] : http://www.odemesistemleri.org/odeme-hatalarinin-tasnifi-ve-onyuze-cikarilmasi-gereken-mesajlar-46/
  • 17. 17 Payment and Refund Tests! Refund Tests •  100 TL’lik siparişin tamamının iadesi ve iptali •  20 TL’lik siparişin tamamının kısmi iadesi •  20 TL’lik siparişin 5 TL’sinin kısmi iadesi •  20 TL’lik siparişin ikinci kez 10 TL’sinin kısmi iadesi •  100 TL’lik siparişin iadesinin iptali J •  … Total 100 TL 20 TL 30 TL 50 TL 32 x Virtual POS x … ~ 100+ payment tests
  • 18. Payment systems do not have a tolerance for a mistake You have to go live with 0 bug It’s better not to accept payment than accepting payment with bug that you haven’t realize (it may be too late when you realize the bug) If there is a 2 minute outage, the alarm bells start to ring Payment systems for the health of the heart and blood vessels Maximum adrenaline J 18 Payment and Refund Tests! Payment and Refund Tests [5/6] : http://www.odemesistemleri.org/odeme-ve-iade-testleri/
  • 19. Now is Wednesday 02:20 pm. Considering last week Wednesday between 00:00 – 02:20 pm and last 4 week average: •  How many payment transactions requested ? •  What about the amout of those transactions ? •  What about the breakdown of those transactions based on Virtual POS’ses and card families? •  What about the success and failure rates ? •  What about the distribution of payment errors ? •  What about the standart deviation of those transactions ? •  … 19 Proactive Monitoring: Payment and Refund! Proactive Monitoring [6/6] : http://www.odemesistemleri.org/proactive-monitoring/
  • 20. Daytime •  Based on Virtual POS’ses o  The count of payment transactions in last 2 minutes > 0 ? o  The count of payment transactions in last 3 minutes > (last 4 week average) x 0.85 ? o  The amount of payment transactions in last 5 minutes > (last 4 week average) x 0.85 ? o  The count of payment errors in last 10 minutes > (last 4 week average) x 0.85 ? At Night •  Based on Virtual POS’ses o  … 20 Proactive Monitoring: Payment and Refund!
  • 21. Problems should be identified immediately with proactive monitoring It should be a learning system If a Virtual POS is down, than it should be disabled and those bank cards payment requests should be redirected to default Virtual POS automatically Users should be informed • ‘Currently it is not possible to process an installment payment with Y bank cards, you may pay without installment’ 21 Proactive Monitoring: Payment and Refund!
  • 22. 22 Proactive Monitoring: Payment and Refund! Currently it is not possible to process an installment payment with Akbank cards, you may pay without installment
  • 23. ü  Shopping Steps ü  Card Payment Page (minimalist approach, the maximum information) ü  Syntactic and Semantic Validations ü  Distiribution of Payment Errors ü  Payment Errors to Display ü  Payment and Refund Tests ü  Proactive Monitoring 23 Status Quo!
  • 24. 4- Is there a payment problem ? 24 New Feature Development ve 4 Check Points! 1- Is there a Fraud risk ? 2- Is there a refund problem? 3- Is there an accounting problem?
  • 25. Fraud detection, fraud prevention and monitoring mechanisms •  User’s history and profile •  Item’s price •  Online item / offline item •  Payment location, IP address and cookie information •  Other cards used by the user •  Cardholder name surname vs user membership name surname •  Shipment address vs membership address information •  Payment errors encountered by user •  Payment fail / success statistics of user •  … 25 Fraud and Chargeback! Fraud Capturing, Calculations and Prevention Methods: http://www.odemesistemleri.org/fraud-sahtecilik-yakalama-hesaplama-ve-onleme-yollari/
  • 26. Fraud detection, fraud prevention and monitoring mechanisms •  Rule sets •  Learning systems •  Data mining considering previous data •  Potential risk algorithms Chargeback Flow •  Chargeback request •  The appeals process •  Returning/rejecting the chargeback request 26 Fraud and Chargeback!
  • 27. Personal Security • Using known and safe shopping sites • Considering key-logger in public internet • Using 3D Secure • Using virtual cards • … Corporate Security • Not storing card information • PCI – DSS • Audit • Penetration tests • … 27 Security!
  • 29. Models: • 3D-PAY • 3D-PAY OOS (3D-PAY HOSTING) • 3D Verification: • Half 3D Secure • Full 3D Secure 29 3D Secure! 3D Secure with Relevant Q & A: http://www.odemesistemleri.org/3d-secure-ile-ilgili-tum-merak-ettikleriniz/
  • 31. •  Breakdown of Payment Systems in Turkey: Alternative Payment Systems and Their Details [Analysis]: http://www.odemesistemleri.org/turkiyedeki-odeme-sistemlerinin-kirilimi-alternatif-odeme-sistemleri-ve-detaylari-analiz/ •  3D Secure with Relevant Q & A: http://www.odemesistemleri.org/3d-secure-ile-ilgili-tum-merak-ettikleriniz/ •  What is BKM Express, Features and What Are the Pros, Why It is Preferred: http://www.odemesistemleri.org/bkm-express-nedir-ozellikleri-ve-artilari-nelerdir-neden-tercih-edilmelidir/ •  Alternative Mobile Payment System with a QR Code, PARAKOD [Interview]: http://www.odemesistemleri.org/qr-kod-ile-calisan-alternatif-mobil-odeme-sistemi-parakod/ •  PayU - Virtual POS, Fraud Monitoring and Prevention Services [Interview]: http://www.odemesistemleri.org/payu-sanal-pos-ve-fraud-filtreleri-hizmeti-roportaj/ •  PayPal and Turkey Payment Systems Market [Interview]: http://www.odemesistemleri.org/paypal-ve-turkiye-odeme-sistemleri-pazari-roportaj/ •  Mobile Shopping and Payment Platform Mobilexpress [Interview]: http://www.odemesistemleri.org/mobil-alisveris-ve-odeme-platformu-mobilexpress-roportaj/ 31 Articles may be of Interest!
  • 32. •  İninal Prepaid Card User Experience: http://www.odemesistemleri.org/on-odemeli-ininal-kart-kullanici-deneyimi/ •  Fraud Capturing, Calculations and Prevention Methods: http://www.odemesistemleri.org/fraud-sahtecilik-yakalama-hesaplama-ve-onleme-yollari/ •  Shopping Cart and Card Payment Systems Experience - Article Series: http://www.odemesistemleri.org/alisveris-sepeti-ve-kartli-odeme-sistemi-tecrubeleri-yazi-dizisi/ •  Shopping Card and Payment Steps Design [1/6]: http://www.odemesistemleri.org/alisveris-sepeti-ve-odeme-adimlari-tasarimi-16/ •  Card Payment (Checkout) Page [2/6]: http://www.odemesistemleri.org/kartli-odeme-sayfasi-26/ •  Syntactic and Semantic Validations [3/6]: http://www.odemesistemleri.org/syntactic-ve-semantic-validasyonlar-36/ •  Classification of Payment Errors and Error Messages to Display [4/6]: http://www.odemesistemleri.org/odeme-hatalarinin-tasnifi-ve-onyuze-cikarilmasi-gereken-mesajlar-46/ 32 Articles may be of Interest!
  • 33. •  Payment and Refund Tests [5/6]: http://www.odemesistemleri.org/odeme-ve-iade-testleri/ •  Proactive Monitoring [6/6]: http://www.odemesistemleri.org/proactive-monitoring/ •  Everything About Credit Card Payments and Cash Price with Installment: http://www.odemesistemleri.org/kredi-karti-ile-odeme-ve-pesin-fiyatina-taksit-hakkinda-bilmedikleriniz/ •  Setting up a Payment Systems Infrastructure: Credit Card Channel: http://www.odemesistemleri.org/odeme-sistemi-altyapisi-kurmak-kredi-karti-kanali/ •  Setting up a Payment Systems Infrastructure: EFT / Wire Transfer Channel: http://www.odemesistemleri.org/odeme-sistemi-altyapisi-kurmak-efthavale-kanali/ 33 Articles may be of Interest!