Home>3D Secure – secure Citi card payments online Make secure online purchases with your card! Activate 3D Secure for your card free of charge. And get a new standard in security when making purchases online. Book a trip, buy a book or a laptop without worrying about card fraud. 3D Secure represents a new standard of security when making purchases online. Your online purchases are protected by a one-time code sent to your cell phone. 3D Secure significantly reduces the danger of card fraud when purchasing online. The service is free of charge. All payment data is sent to the bank, not to the vendor. 3D Secure is used by an ever-increasing number of trusted vendors. Secure online payments We have enhanced the security of online transactions and introduced verification using a one-time password. When paying at a store that supports 3D Secure, you will be sent a one-time code as an additional verification method. The 3D Secure one-time code is sent to the card holder's cell phone via SMS. To start using 3D Secure payments, you need to activate this feature on your card. All Citi credit as well as debit cards issued after 1. 11. 2011 gets 3D Secure service activated if customer kept mobile phone number valid and updated. 3D Secure If the online vendor does not support 3D Secure, you will be able to continue your purchase regardless of whether or not you have activated 3D Secure for your Citi card. The number of vendors that do not yet use 3D Secure is declining steadily. Indeed, at present some 30% of Czech online stores fall into this category. If you purchase in an online store that supports 3D Secure but you have not activated this feature on your card, you may perform five online transactions without having to activate it. Subsequent online transactions with the same card will be declined. You may activate the feature at any time. 3D Secure will be activated on your Citi card within one business day. How to activate 3D Secure on all your Citi cards? It's simple. Call the CitiPhone customer line at 233 062 222 and request 3D Secure activation for all or selected Citi cards. Or apply using an online form - simply fill in your contact details and we'll call you. 3D Secure is free of charge, and will be activated within one business day. All Citi credit as well as debit cards issued after 1.11. 2011 gets 3D Secure service activated if customer kept mobile phone number valid and updated. Click on to expand and on to minimise the details. Can I make online purchases even without 3D Secure? It depends on the store. You may only make online purchases at stores that do not support 3D Secure. The number of vendors supporting 3D Secure is on the rise, though, and 3D Secure is becoming the security standard. In stores supporting 3D Secure, you may only perform five transactions without having 3D Secure activated. Subsequent transactions will not be accepted. Go ahead and activate 3D Secure right now by calling CitiPhone at 233 062 222. Can I make a purchase in an online store if the vendor does not use 3D Secure? Yes, you may purchase there regardless of whether you have activated 3D Secure or not. How much will I pay for the service? 3D Secure is free of charge. Can I activate 3D Secure on more than one card? Yes. When performing the activation through CitiPhone, our banker will ask you whether you want to activate the service on all your Citi cards. Does 3D Secure apply to other types of transactions as well? No. 3D Secure only applies to payments in online stores. Receive your statements electronically