Nexmo Blog

How to Build SMS 2FA That Won’t Scare Away Your Users

Thu 5 Mar 2015

ManyellingatcomputerAs he hackings of high-profile companies  such as Apple or Snapchat have shown, security is more important than ever for applications of all sizes. Many businesses, including the aforementioned companies, are turning to SMS-based authentication and number verification in order to secure their platforms and protect their users.

Two-factor authentication, or 2FA, works by combining multiple securing factors — in most cases something you know (a password) and something you have (a phone).

The ubiquity of the mobile phone makes SMS an effective tool for many apps and websites because of the balance it strikes between convenience and security.

For a primer on why companies are using SMS for their authentication needs, please see my previous post: Why 2FA?

I-Have-No-Idea-What-Im-Doing-1It’s simple…or is it?

While setting up an SMS-based authentication system is not necessarily difficult from a technical point of view, it can be difficult to balance the need for security and the potential for alienating users with a poor user experience.

We’ve analyzed over 2 billion verifications that have been performed through our SMS API and developed a comprehensive list of best practices to implement to ensure the highest conversion rate possible. Continue…

Phone Number Verification: A Stronger Alternative to Traditional Passwords

Tue 3 Mar 2015

Consumers feel increasingly threatened by data breaches, and for good reason: 40 percent of internet users have been victimized by stolen passwords, according to security company Ping Identity. However, consumers aren’t the only ones who suffer from cybercrime. As shown in the Cost of Data Breach report by the Ponemon Institute, the impact of security breaches on businesses and brands is devastating, not to mention the cost of following up with hours of expensive customer support and reputation reestablishment.iStock_000050227510Large_resized


Memories of ConFoo

Thu 26 Feb 2015


This past week Nexmo attended the ConFoo Web Development Conference in Montreal, Canada. Around 600 developers, speakers, sponsors, and organizers were surrounded by a thick blanket of snow and gray skies as they made their way to the top floor of the Bonaventure building in the heart of Montreal to escape the frigid temperatures (which never rose above -10C [14F]).

The ambience couldn’t have been better: the venue made us feel like we were staying in a mountain chalet. With a heated outdoor pool that many of us enjoyed after the sessions, I started to think the name “ConFoo” got its roots from the French word “CONFOrtable” (“comfortable” in English). This amazing setting lent to a laid-back yet passionate energy that made the event something special.image2


U.S. SMS Long Codes vs. Short Codes? What is Best for My Use Case?

Wed 25 Feb 2015

iStock_000001130338Large_resizedIn the United States, there are strict regulations that dictate how businesses should interact with end users via SMS. Sending an SMS incorrectly can result in an immediate shutdown of your service, or worse fines of up to $1500 per message. The two most common ways to send SMS messages in the U.S. are using a long code or a short code as the Sender ID (a Sender ID is the “from” address of a text message). This post will assist you in understanding the differences between the 2 options and help you choose which option is best for your use case.


Fancy a Trip to Amsterdam, At No Charge?

Tue 24 Feb 2015

The 10th edition of The Next Web Conference will be held on April 23-24, 2015 in Amsterdam, bringing together thousands of innovative minds in one jam-packed event, to learn and discuss the latest web trends, best business practices and meet some of the world’s most influential leaders in technology and innovation. The annual meetup will celebrate a decade of inspiration, with confirmed appearances by the industry’s top trailblazers, from Mark Randall, Adobe’s Vice President of Creativity, to Werner Vogels, CTO at Amazon.

TNW Conference

A full-priced ticket to the 2-day TNW Conference Europe 2015 event costs $625 (€545). In partnership with The Next Web, Nexmo is offering you a once-in-a-lifetime opportunity for you to not only win free tickets, but also arrive at the conference in style.

No matter where you’re based in the world, we want you to experience Amsterdam, VIP-style. Continue…

What is VoiceXML?

Sat 21 Feb 2015

If you’re just getting started building phone-enabled applications, you may be wondering what exactly VoiceXML is used for. In this post I’ll give an overview of what VoiceXML is, what it’s used for, and the general components of a VoiceXML document.

In a nutshell, VoiceXML is like HTML for a phone call: it describes what the call should “look” like when a call connects a person with an interactive voice response (IVR) system. Continue…