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Category: User experience

How To Hack PayU – And Buy 10x More For The Same Price

Do you know PayU? It is a Paypal competitor on emerging markets. A few weeks ago I was talking with my friend, who was working on online payment integration with PayU REST API. He showed me that you can play around with payment details and PayU API won’t complain about amount not mathematically correct. It is possible, that client will increase products quantity without increasing the amount to pay. I invested some time to test all the cases and this article will show you how to hack PayU payments and to get more than you paid for.


Mobile Number Validation – How To Do It Right?

I don’t know about you, but i get lots of e-mail everyday. I mean LOTS. Some of them are short reminders that reside in my inbox for days to actually remind me of something. If I could choose, I would prefer to receive reminding SMS. It’s more interruptive, but reminders should work this way :)

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Everything You Need to Know About Cookies: Part 3. Explicit or Implied Consent?

Everybody’s wrong in complying with EU cookie law. Seriously, there’s no one who would comply with it in 100%. In this article you’ll understand why. At the end you’ll also know differences between implied and explicit consent, and when you can use it on your website. Let the journey into EU legislation begin!

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Everything You Need to Know About Cookies: Part 2. Types of Internet Cookies

In first article you learned what are cookies and where the name come from. Also, I briefly explained how UE treats cookies and where they see potential problem. But most important for me and you is information how to properly comply with EU cookie law.

Depending on cookie type, UE treats it in different way, so you should know all of this usages. That’s what you’ll learn in this article.


Everything You Need to Know About Cookies

Do you remember cookie monster? That one guy from Sesame Street which was eating any amount of cookies in violent manner? Well, EU took special interest in the matter of cookies. Now offering a cookie must be overt.

In May 2011 new EU (European Union) directive about website cookies came into effect. Everyone whose website is hosted within EU or targeted towards EU citizens must comply with it. It means, that you have to ask your website users for consent when storing cookies on their computers.

In this article series I’ll cover what are cookies, what kinds of them we are using, and what’s the difference between implied and explicit consent. At the end, You’ll also know when you don’t need to ask for consent and how to properly comply with EU cookie law on your website.


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First, Middle, Last – Why Not Full Name?

Few years ago someone told me that I should write my first and last name when signing contracts or filling any form (right in that order). It was obvious for me for all those years. But I must be aware that it’s not true in every country. How with others?

In every application, that store user data, you have “name” field. It’s often divided into first and last name. Such architecture helps with sorting (using last name) and it’s convenient for programmers (we LOVE tables, don’t we?). I’ll try to answer question: is first/last name good global design choice? What would be user experience all over the world? Do everybody have last name?


Why UTF-8 is Best Encoding for You and Your Customers?

UTF-8 will make your application a lot easier to internationalize
UTF-8 will make your application a lot easier to internationalize

Back to 2005 I had no idea what is character encoding, why I see � in text files or what is the difference between Unicode and UTF-8. It looked so complicated, that I felt like a blind man every time I needed to deal with this. In this article you will learn all nuances of encodings, why UTF-8 had become standard and how they call unreadable characters in Japan.


What is the Turkey test?

The Turkey Test
What is The Turkey Test?

Hi! This article will cover the topic of Turkey Test. Have you heard about it? Well, you should. Passing it will almost guarantee that your application will work with any locale.

Disclaimer: You should know, that my background is polish. Therefore, I can confirm that half of turkish problems will arise with polish locale.