Visa Developer Community

Win a trip to Paris!   SUBMIT AN ENTRY FOR A CHANCE TO WIN - CONTEST RULES In the forum thread below tell us: "What do you enjoy most about working with the Visa Developer platform?" Doesn't have to be long, whatever you feel is right! Your post will be your entry for a chance to win. We’ll judge all posts using the following criteria – highest scoring will win the trip:   1. Originality/Creativity of Entry – 35%; 2. Appropriateness to Theme – 25%; 3. Clarity – 20%; 4. Mention of Specific Portal feature You Enjoy – 20% No Purchase Necessary to Enter or Win. Open to legal US & DC residents, 18+ who are Visa Developer Center members as of 4/15/19. Read the full contest rules, eligibility details, how to enter and judging criteria here.   You have until 11:59 PM ET on April 23, 2019 to post your submission below. We have partnered with The Visa Everywhere Initiative team to send one Visa Dev Community member to Paris. The grand prize not only includes a trip for the winner to attend the Visa Everywhere Initiative Program: Women’s Global Edition Finals (June 6, 2019 – June 9, 2019) in Paris, France, but also includes:   Round-trip economy class air transportation for one (1) person from a major U.S. gateway airport nearest the winner’s home to Paris, France Ground transportation from/to hotel/Event in Paris Three (3) nights’ hotel accommodations (one room, single occupancy) One (1) admission ticket to the Women’s World Cup Opening match on June 6, 2019 One (1) admission ticket with reserved seating to the Visa Everywhere Initiative Women Global Edition Finals on June 6, 2019 A Visa® prepaid card valued at $400 USD, and Sponsor-specified Women’s World Cup merchandise     ... View more

Attention D.C. developers, designers and entrepreneurs! Visa and the Small Business Administration (SBA) is heading back to host the 2nd annual #SmallBusinessWeek Hackathon May 3-5, as part of the National Small Business Week.   Developers for Disaster Relief   This time, we hope to enable solutions and apps that help America’s small businesses prepare and/or recover from major natural disasters such as hurricanes, flooding, wildfires, tornados, snowstorms or earthquakes.      Here's Your Challenge   Small businesses face a wide variety of challenges as they recover from natural disasters including:   Restoring their revenue stream Gaining access to funds for both short term and long term recovery Paying employees Finding suppliers still in operation Dealing with Disruption to Communications & Service such as Electricity   Join us to help develop concepts that would help business owners prepare and/or recover from major natural disasters such as hurricanes, flooding, wildfires, tornados, snow storms or earthquakes. Make use of API's from Visa, the U.S. Government, and third parties to build an impactful new tool.   Plus, compete for a chance to win a piece of the $60K prize pool! Event is totally free, just bring your laptop and hackathon energy.   Full event details, including registration, location and schedule here.     See the official announcement here.       ... View more

Your project has been promoted to production!    Now that you're in prod, we'd love to hear more about your launched solution. Share your success story in this forum thread by clicking on the "reply" button below.   Inspire others with your newly promoted project! Happy Coding. ... View more

  Here's your Visa Dev Community March Updates:   Featured Topic: Do you know the Postman?   @CTala asked: "Anyone using Postman to consume APIs?" Check out the thread for the answer and if you have more helpful tips, share them! Read the answer here.   Popular Solution: Creating SSL/TLS Secure Channel Web Service   @manuel: "I'm facing issues when consuming Visa sandbox APIs from a C# console code" Anyone else get stumped doing this? Find out the work around in the thread here.   Feel Good Reads: The Visa Dev Community celebrate international Women's Day   Our community celebrate by sharing their personal stories and experiences on the IWD forum topic! Head to the thread here and check out the amazing Women and Men in tech from our community and how they #BalanceforBetter.    Visa Gift Card Offer: Welcome Board Post   Don't forget to stop by the Welcome Board post and introduce yourself so you can get involved in the community and unlock the brand new Welcome Badge. We still have $25 gift cards to give out to the first 125 that do! Terms and conditions here.   That's all for March, but make sure to ask your questions share your expertise every day and we will see you on the community! ... View more

Written by: Todd Brockman, Senior Vice President, Issuer Processing, Visa New Visa DPS APIs help DPS processing customers anticipate emerging payment trends and deliver innovation with speed   The payments landscape remains as dynamic as ever. Shifting customer expectations, emerging technologies and significant growth opportunities presented by the accelerated adoption of digital payments means financial institutions and processors can no longer stand idly by for the next trend to emerge. Instead, they need technology solutions that can enable the future of payments experiences, today. Enter new Visa DPS APIs available on the Visa Developer Center for financial institutions, fintechs and partners that process their debit and prepaid programs with Visa DPS.   Unveiled during the annual Visa DPS User Conference , Visa DPS APIs provide financial institutions with open, easy access to Visa and Visa DPS API-based processing solutions and capabilities, helping them quickly and easily implement the latest payment technologies and deliver innovative, secure and convenient customer experiences. Clients gain the flexibility and choice to build solutions that best fit their working models and specific customer needs.   Here’s what to expect from this front door for Visa DPS APIs:   A one-stop shop to Visa API capabilities: Gain easy access to the latest payment technologies from Visa and Visa DPS through the Visa Developer Center to enable improved customer experiences, including new capabilities such as One Time Password, CVV2 Generation, Cardless ATMs and Digital Issuance Custom solutions and delivery: Build on a single API or implement a bundled solution for flexible ways to deliver the best solution for your customers in the best way for your organization Easy-to-use, open APIs: Visa DPS APIs within the Visa Developer Center are designed as a welcoming, user-friendly environment and interface, even for non-developers Consulting services: Visa payment experts are on hand to help clients through every step of their development journey. Employing real-world experience, data analytics and proven use cases, our experts help solve the needs of all types of financial institutions, big and small Visa DPS APIs on the Visa Developer Center supports the full lifecycle required for emerging payment concepts to be successful.  DPS customers utilize the combined assets of Visa and Visa DPS to rapidly launch new innovations at scale.   Learn more and engage with Visa DPS here. ... View more

Accessible products are better products.    We're excited to share our version of the Web Content Accessibility Guidelines, translated for designers, developers and testers to more easily and consistently create accessible products. We're calling it the Visa Global Accessibility Requirements (VGAR). Learn about users with disabilities and keep these users in mind as features, designs, interactions, and code decisions are made and evaluated. Accessibility is not a fix; it's a process.   We put a lot of time into creating a set of clear and concise requirements that worked for Visa products and it just made sense to share the requirements with others. Your situation may require different or modified requirements, but we invite you to take a look at what we use and contribute to a more accessible web for everyone!   Get all the information you need and view the VGAR requirements for free here.         ... View more

Each year we conduct a Visa Developer User Survey to learn what we can do as a developer platform to improve your experience.   Below is a list of some of the improvements we made based on last year’s survey. If there are other requests, please let us know in the comments section. We will also be sharing our 2019 survey next month so please start collecting your feedback now.   Changes we made:   Feedback: “Show Real Use Cases” - You asked for better ways to find API solutions needed for specific business use-cases.   Solution: We launched, Use Cases . Got a business problem? Check out the various use cases and examples to see how Visa APIs can solve your needs. Some use cases include: Enroll, travel, transact - Cardholder enrolls in Mobile Location Confirmation service, travels to a new location and confidently makes a purchase transaction Enhanced Travel Experience – Provide a more seamless payment experience and easy access to information regardless of cardholder location. Use geo location to reduce false declines Keep Your Card Top-of-Wallet - Issuer enables the Visa card to be securely and conveniently used in digital wallets in order to keep the card top-of-wallet and remove the need to re-issue a card when a device with a digital wallet is lost. Provide Relevant Offers - Provide an extensive list of relevant offers for your cardholders to help drive card usage and loyalty.   Feedback: “Improve password creation when registering” – You asked us to make password requirements/rules clearer.   Solution: We’ve added a pop-up that lists the rules and checks off each requirement as you create your password     Feedback: “Allow users to share projects” – You wanted to share your projects between users, so that you can collaborate with other developers at your company.   Solution: We’ve added an “Invite User” option on your project dashboard which gives you ability to share your project with other users along with assigning specific roles for each user.           Feedback: “Add more tutorials” – You want to see more guides to understand how to get started and how to navigate the portal     Solution: We created four new tutorials from Getting Started to Going into Production - check them out here Solution: We published the “Working with Visa APIs” which is our new Getting Started Guide with more information to take you from start to finish of the implementation process.   We continue to work on improving the platform and if you have any suggestions, please comment below.   ... View more

Visa launches first global competition focused on celebrating women entrepreneurs.   In celebration of International Women's Day, Visa launches the first Visa Everywhere Initiative: Women's Global Edition. The global program invites women entrepreneurs from around the world to tackle FinTech and Social Impact challenges for a chance to win $100,000 USD in each of the two challenges.   The program will culminate with a finals event to be held on June 7th before the opening match of the FIFA Women's World Cup France 2019!   Here's how it works:   To participate companies with at least one female founder are invited to submit solutions that tackle challenges facing the FinTech and Social Impact landscapes today through one of the two innovative briefs: Challenge 1 (FinTech): Leveraging your company's unique capabilities, how could your solution help transform consumer and/or commercial payment experiences locally, regionally or globally? Challenge 2 (Social Impact): How can women entrepreneurs around the world drive social impact by supporting sustainable and equitable livelihoods and strengthening local/regional economies?   Submissions open March 6th and applications are due by April 14th. Oh, and just to make things that much sweeter, all twelve finalists who make it to the Live Finals will attend the opening match of the FIFA Women's World Cup later that evening! This is an opportunity you don't want to miss out on!   Get all the information on where to submit, important deadlines and participation terms by visiting: www.visa.com/everywhereinitiativeglobal       ... View more

Attention UK devs!   Visa is inviting the best brains in tech and design to come together the weekend of March 22nd to help solve some of the biggest issues plaguing British small businesses.   Small businesses are at the very heart of the British economy, so helping them optimise new technologies to operate more efficiently allows them to focus on what they do best.   The Design Hack will take place over three days, during which the designers and developers selected to participate will be put into teams to build workable solutions designed to address a variety of small business challenges. For additional credit at judging time, they will be encouraged to leverage Visa APIs to support their solutions. Make sure to check out the small business filter for the most relevant APIs on our developer platform.   We’ve identified four pain-points most business share which attendees will be tasked with designing solutions for: Access Administration Payments International Trade But it’s not just limited to those four. Participants are encouraged to consider their own business challenges to take on.   At the end of the event, a professional expert panel will judge the proposed solutions and will award the winners a share of a cash prize of £7,000.  Visa will also give the winners the opportunity to come to the Visa Innovation Centre in London and discuss some of the latest topics in innovation.     Our event will take place in a dynamic working space in Holborn in London.   To find out more and be in with a chance of taking part, please visit:   http://visadesignhack.eventbrite.co.uk   (T&Cs apply)       ... View more

You should know, not all of our users will receive this new monthly newsletter. In fact, the Visa Dev Community Newsletter will be sent to a select group of our users. Want to be part of it or didn't recieve it? Take these steps:   Once you are logged into your Community account, make sure to go account settings on the top right hand corner of your page Scroll down to "Marketing Communication Settings" and turn it on. Save settings We are excited to continue expanding our relationship with you and the rest of the Visa Developer Community while ensuring you have the platform to voice your ideas, share your expertise, and learn from your peers. That is why I am very excited to share the launch of the monthly Visa Dev Community Newsletter, exclusively for those who have created a Community profile, like you.   WHAT TO EXPECT:   This newsletter is all about what you and your fellow peers are up to on the Community, from forum hot topics to developer troubleshooting tips. We want to feature and showcase your expertise, so we’ll also announce each month’s super users and highlight what they’ve got going on – here’s your chance to shine!   Plus, find out about opportunities for you to get more involved with experts from Visa before anyone else, including invite-only webinars and in-person meetups, developer events.    INTRODUCE YOURSELF:   We want to get to know you! Head to our new Welcome Forum Thread and introduce yourself. Tell us what brings you to the community and our developer program. How can others help you? How can you help others?   We plan to have lots of fun challenges and opportunities – so, pro tip…the more you’re engaging the more opportunities you’ll have at some cool stuff in the future.   If you have any questions you can contact me directly at visadeveloper@visa.com . Otherwise, I look forward to chatting with you in our community!   Cheers, Ricardo Navarro Visa Developer Community Director  ... View more

  Digital transactions are the backbone of many online experiences—but the process behind them can be complex. That’s why we’ve created the Payments 101 webinar for developers to learn the ins and outs of the payments ecosystem—from developers in the payments space. Watch the Payments 101 Webinar and learn about the opportunities for innovation in payments. Hear from experts at Marqeta, Square and Visa as they dive deep into the payments ecosystem to help you start developing the next commerce solution. Speakers Ahmed Siddiqui, VP of Product Management at Marqeta, and Carl Perry, Developer Platform Lead at Square, will be joining us for our first highly-requested Payments 101 webinar.              After watching this webinar, developer will be able to: The ecosystem of payments, from issuers to acquirers Spaces for innovation in the payments landscape How knowing digital payments can help you code better experiences  Enjoyed the webinar? Leave a comment below on what you would like to see next!  ... View more

Introduce youself! Welcome to the Visa Dev Community 🙂     Not sure where to start? You're in the right place. We've got a great team of Visa API experts in our Community ready to help with any questions or challenges you might have.   Let's start with a quick intro, hit the reply button below and introduce yourself. Tell us what brings you to the Visa Developer Center and how can we help? How can you help others?   Ricardo here, the Community Director for Visa Developer. I currently live in San Francisco but originally from Florida where I went to the University of Florida I've been at Visa for three years now and love working on different projects to engage and grow our community. I am always looking for new ways to engage with you all so if you have any ideas or want us to be at an event let me know! The Visa Developer team is a smart and fun group to work with so feel free to reach out if you have any questions, we want to help you in a way we can.   ... View more

Hey Visa Dev Community!    Visa is helping organize the next PaymentsEd Forum and we want to host sessions you would be excited about. As a payments dev, what topics would interest you? What kind of sessions would help you understand payments better?   Comment below. ... View more

Please ensure your systems are updated to Visa Developer's latest security protocol ciphers to minimize disruption to your project.   Visa regularly reviews supported encryption standards to provide one of the best encryption protections for our APIs. As part of that commitment, we are deprecating older security protocols (ciphers) that do not meet current industry standards for connecting to our REST APIs.   All affected clients have been sent an email. If you received an email notice from Visa Developer, it is because our logs show your project is connecting to our REST APIs using one of the protocols or cipher suites that will be deprecated in VDP Sandbox by January 31, 2019 and in VDP Production in early 2019. Therefore, action is required on your part to help avoid interruption with your Visa Developer service.   What is a cipher suite   A cipher suite is a collection of encryption algorithms used to establish secure connections. VDP  will only support the following protocols and cipher suites for encrypted communication   TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 TLS_RSA_WITH_AES_256_GCM_SHA384   TLS_RSA_WITH_AES_128_GCM_SHA256   TLS_RSA_WITH_AES_256_CBC_SHA256    TLS_RSA_WITH_AES_128_CBC_SHA256    Impact   Emails titled "Please update to Visa Developer's latest security protocols" were sent to account users who are either Owners, Administrators or Developers for each affected account. If you did not receive this email notice, then your account is not affected, and no action is required.   If you did receive the email, action is required on your part to help avoid interruption with your Visa Developer service. Support for weak cipher suites will be removed on early 2019 and your project will become incompatible.   Take Action   Using the steps below, we strongly recommend you immediately test your system to determine if it is compatible with the new security requirements. If the test fails, you will need to plan for upgrading your system and verifying compatibility.   TEST: First, check your current system’s compatibility by making API calls to VDP Sandbox environment after February 1, 2019. UPGRADE: If you are unable to successfully connect to the Sandbox environment, you may need to upgrade your operating system’s security components. You may need to make configuration changes in your application to update the underlying software dependencies.   Action: Follow our tips for identifying connection errors and upgrading your environment for compatibility:    Configuring Cipher Suites   The following table shows the support in Java 7 and 8 for the cipher suites allowed by Visa.   Cipher Suite Java 7 Java 8 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 No Yes TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 No TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 Yes* Yes   TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 Yes** TLS_RSA_WITH_AES_256_GCM_SHA384 No TLS_RSA_WITH_AES_128_GCM_SHA256 TLS_RSA_WITH_AES_256_CBC_SHA256 Yes* TLS_RSA_WITH_AES_128_CBC_SHA256 Yes** * Unlimited strength crypto policy should be used and the cipher suite should be explicitly enabled. ** The cipher suite should be explicitly enabled   If you are using Java 8, you should be able to connect to Visa without any issues. If you are using Java 7 and are unable to connect to Sandbox environment, follow the instructions below.   If you are using Java’s   HttpsURLConnection   for making API calls, If you already have -Dhttps.cipherSuites JVM argument, add TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 and TLS_RSA_WITH_AES_128_CBC_SHA256 cipher suites to the list, if they are not already present. Else, add the following JVM argument which enables TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 and TLS_RSA_WITH_AES_128_CBC_SHA256 cipher suites in addition to the ones enabled by default in java 7. -Dhttps.cipherSuites =TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,TLS_RSA_WITH_AES_128_CBC_SHA256,TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDH_RSA_WITH_AES_256_CBC_SHA,TLS_DHE_RSA_WITH_AES_256_CBC_SHA,TLS_DHE_DSS_WITH_AES_256_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDH_RSA_WITH_AES_128_CBC_SHA,TLS_DHE_RSA_WITH_AES_128_CBC_SHA,TLS_DHE_DSS_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,SSL_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA,SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA,SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_ECDSA_WITH_RC4_128_SHA,TLS_ECDHE_RSA_WITH_RC4_128_SHA,SSL_RSA_WITH_RC4_128_SHA,TLS_ECDH_ECDSA_WITH_RC4_128_SHA,TLS_ECDH_RSA_WITH_RC4_128_SHA,SSL_RSA_WITH_RC4_128_MD5,TLS_EMPTY_RENEGOTIATION_INFO_SCSV If you are using   Apache HttpClient   for making API calls, provide the cipher suites list while constructing   SSLConnectionSocketFactory. SSLContext sslcontext = ... SSLConnectionSocketFactory sslSocketFactory = new    SSLConnectionSocketFactory(sslcontext,         new String[]{"TLSv1.2"},         new String[]{"TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256",                 "TLS_RSA_WITH_AES_128_CBC_SHA256",                 "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA",                 "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA",                 "TLS_RSA_WITH_AES_256_CBC_SHA",                 "TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA",                 "TLS_ECDH_RSA_WITH_AES_256_CBC_SHA",                 "TLS_DHE_RSA_WITH_AES_256_CBC_SHA",                 "TLS_DHE_DSS_WITH_AES_256_CBC_SHA",                 "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA",                 "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA",                 "TLS_RSA_WITH_AES_128_CBC_SHA",                 "TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA",                 "TLS_ECDH_RSA_WITH_AES_128_CBC_SHA",                 "TLS_DHE_RSA_WITH_AES_128_CBC_SHA",                 "TLS_DHE_DSS_WITH_AES_128_CBC_SHA",                 "TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA",                 "TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA",                 "SSL_RSA_WITH_3DES_EDE_CBC_SHA",                 "TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA",                 "TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA",                 "SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA",                 "SSL_DHE_DSS_WITH_3DES_EDE_CBC_SHA",                 "TLS_ECDHE_ECDSA_WITH_RC4_128_SHA",                 "TLS_ECDHE_RSA_WITH_RC4_128_SHA",                 "SSL_RSA_WITH_RC4_128_SHA",                 "TLS_ECDH_ECDSA_WITH_RC4_128_SHA",                 "TLS_ECDH_RSA_WITH_RC4_128_SHA",                 "SSL_RSA_WITH_RC4_128_MD5",                 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV"},         SSLConnectionSocketFactory.getDefaultHostnameVerifier()); CloseableHttpClient httpClient =    HttpClients.custom()    .setSSLSocketFactory(sslSocketFactory)    .build();   If you have enabled unlimited strength crypto policy, in the above steps, you can   optionally add TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 and TLS_RSA_WITH_AES_128_CBC_SHA256 to the enabled cipher suites list.   Troubleshooting TLS issues   For troubleshooting TLS issues, you can start your application with   -Djavax.net.debug=allargument and make an API call to visa. You will see the following in your logs:   *** ClientHello, TLSv1.2 Cipher Suites: [TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384, TLS_RSA_WITH_AES_256_CBC_SHA256,…]   This is the list of cipher suites enabled in your application. This list should include at least one of the cipher suites allowed by visa.   *** ServerHello, TLSv1.2 Cipher Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384   This is the cipher suite chosen for the HTTPS connection and will be one of the visa allowed cipher suites.              3. VERIFY: Once you have made the necessary changes, verify your upgraded system can connect successfully to the same test endpoint.   Our normal REST API endpoint already supports the stronger cipher suites, so you can promptly cut over your production traffic once the changes have been verified.   If you have any questions or need support, please comment below and we'll help! You also post your question on this forum thread.  We can also help if you reach us via email   developer@visa.com or your designated Visa contact. ... View more

Visa Developer was leveraged at HackYeah, the largest European Hackathon and 2 nd largest in the world.     The Visa Developer team wrapped up an awesome weekend during the last weekend of November, supporting developers at HackYeah , the largest European Hackathon held in Warsaw Poland. Over 2,100 developers crowded the Global Expo in Warsaw to solve over 20 challenge statements and only had 24 hours to hack!   This was an event not to miss, not to mention the special guest was Mateusz Morawiecki – Polish Prime Minister.   Visa was one of two strategic partners of the event and presented developers with two challenges:   Payments in the world of Internet of Things - Imagine the future intelligent and connected world and design solution that will unlock new commerce opportunities. Commerce Experiences of Tomorrow – Design the new quality and new value propositions around the commerce experience of the future. Embed the seamless, secure payments into your solutions powered by Visa APIs. 30 teams took on these challenges and with the support of Visa mentors two teams came out on top, each were awarded 3500 Euro each.   Team Beocoin - Winner of Payments in the World of Internet of Things Challenge   The team used IoT transmitters and Visa APIs to create merchant affinity and offer cardholders frictionless payment experiences in split payments. The Visa APIs they used with Visa Token Service, Payment Account Validation, Payment Account Attributes Inquiry and Visa Direct.       Team EZ Bill Sharing - Winner of Commerce Experiences of Tomorrow Visa Challenge    The team's project is a smarter way of sharing bills based on Visa Direct API, Geolocation and Bluetooth sensor in smartphones.        In true hackathon fashion, Visa set up a booth so developers can take a break from hacking. They were invited to relax in 9D Virtual Reality simulator or get some exercise and take part in some of the sport contests such as cycling or foosball.     The special entertainment zone was open around the clock and it allowed developers to regain forces for further programming challenges.       Thank you to all developers who joined us! Stay tuned for more from our winners as in an upcoming Q&A with the winning teams! ... View more