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In this article we’ll therefore present our test findings on the following: Yet, our research also show that 80% of e-commerce sites currently don’t use this powerful typing aid for their credit card field. Our test sessions also revealed that allowing users to type spaces and auto-formatting their card number with spaces can greatly improve users’ accuracy when typing their credit card number, and help them to more easily check that their typing is valid. And now, knowing the user’s credit card type, you can also auto-format their card number input itself – as they are typing it – according to the Spacing Patterns of that card type.The long 15-16 digit credit card number is very prone to typos and we observed 23% of users to either type or verify their card number in distinct 4-digit blocks – identical to the physical print on most credit cards. For instance you can customize the ‘Security Code’ help text to fit the card type. But perhaps more importantly, you can make slight modifications to the rest of the payment form that improve the user experience and lower the risk of card validation errors (and thus, lower the rate of checkout abandonments). This means that if the first digit the user enters into the card number field is the number ‘4’, then you know that they are entering a VISA card.įor one, this allows you to auto-select the card type on behalf of the user so they don’t have to worry about that, which in itself simplifies the payment form. Take VISA cards, for instance, which always begin with the number ‘4’. ‘The How’ – IIN Ranges and Spacing PatternsĪll card types have one or more IIN ranges, as listed in the table above.
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Yet for an even better implementation, you should actually go further and auto-format the user’s card number input with spaces to make the input match how the card numbers are printed on the physical credit card (for more on this, see our article The ‘Credit Card’ Field Must Allow and Auto-Format Spaces). no restrictions on input length or character types). Indeed, one of the best ways to improve the accuracy of the user’s card number entry is to simply allow them to enter spaces in the card number field (i.e. Luckily, our usability research also shows that there are ways to help your users accurately transfer the information from their physical credit card to the virtual form fields in your checkout process. where the spaces are on their physical card) as they attempted to validate the accuracy of their input. During our usability testing, we often observe users placing the mouse cursor at every 4th character in their input (i.e. It is needlessly difficult for users to spot errors in a 16-digit long, unformatted string of numbers, compared to one that is broken into ‘chunks’ that match how the number is printed on the physical credit card. Indeed, our quantitative customer research on ‘ Why Users Abandon’ show that distrusting the site with payment information accounts for 17% of checkout abandonments, while card declines make up 4%. One particularly tricky piece of credit card information is the card number, which is typically a non-sensical 16-digit long string where even a single typo will result in a card validation error.Įrrors during the checkout process are generally problematic as they are likely to lead to cart abandonments, and card validation errors are even worse because users are particularly volatile when entering sensitive information such as their credit card data (for more on this, see our article How Users Perceive Security During the Checkout Flow). Our checkout usability research shows that it is difficult for users to enter their credit card information during the checkout process. Suggestions for this reference table can be sent to ‘The Why’ – Credit Card Entry is Critical but Error-Prone Last updated: with new IIN ranges for MasterCard. # (4-4-4-4) Pattern not known for 18-19 digit cards. These card types and/or formats are no longer issued and the cards will often be expired # (4-4-4-4) Pattern not known for 17-19 digit cards. How the digits and spaces are printed on the physical credit cards