The secret sauce behind Branch’s linking and attribution infrastructure is the Branch Persona Graph, the largest pool of deterministic cross-platform (desktop, mobile web, and app) user identities in the world.

Persona Graph’s scale and accuracy means that — unlike our legacy attribution provider competitors — we only use fingerprinting as a last resort fallback. The challenge with fingerprinting is that it relies on non-unique device information, which means it is inherently inaccurate. We built our Persona Graph to help solve this problem, but occasionally we encounter a user who is not recognized by the Persona Graph. In these situations, fingerprinting is the only matching method available.

At Branch, we hate the idea of inaccurate linking and attribution, which is why we recently completed an end-to-end infrastructure upgrade to add support for IPv6. We’re now the first platform in the industry with the ability to leverage the uniqueness of IPv6 addresses for dramatically improved fingerprint accuracy.

Wondering how all this works? Keep reading to find out!

IP-What Technology?

The Internet Protocol (IP) is the communications protocol that provides an identification and location system for devices (i.e. computers, tablets, phones) on networks, and routes traffic across the Internet. Long story short, it’s essentially what allows the internet to even exist.

With the exponential expansion of the internet and devices tailored to access it, the complete exhaustion of globally unique IP addresses using IPv4 — the first publicly used version of the Internet Protocol — has been forecasted since the 1990s.

Enter the creation of IPv6 in 1998, and finally its acceptance as the Internet Standard in 2017. The transition to IPv6 is now well underway, and IPv6 addresses are being allocated globally via Internet Service Providers (ISPs) and mobile networks such as Verizon and T-Mobile.  

The Ambiguity of IPv4

With IPv4, IP addresses are often shared between many devices. In fact, it’s not uncommon for an entire home or corporate network to share a single IP.

While IP addresses are just one of the attributes Branch uses to generate fingerprints, we’ve found that IPv4-based fingerprints are often so similar that 30-40% of them get paired with the wrong user! Along with the fact that fingerprints also start to decompose as soon as they are taken, and become pretty much useless within an hour or two, the outlook for using fingerprinting as a viable attribution method is pretty dire.

Increasing Accuracy with IPv6

Curious why IPv6 makes all the difference? Yes, you guessed it: It provides UNIQUENESS.

With IPv6, every device gets its own address, and we no longer need to worry about an entire network accessing the internet through a single IP.

Since Branch deployed the ability to capture IPv6 across our linking platform, we’ve seen a nearly 30% increase in strong matches with 100% accuracy on iOS alone.

Uniqueness is All

When it comes to user experiences and performance marketing, having 100% confidence in the accuracy of your linking and attribution is a must. It’s what allows you to accurately calculate your return on ad spend (RoAS), and provide world-class app experiences to drive increased conversion and retention rates.

At Branch, we pride ourselves on our matching accuracy — in fact we have a parameter +match_guaranteed that we return with every Branch link to indicate our confidence in the match.

With the increase in accuracy of the fingerprinting matching method when using IPv6 addresses, you can now expect to see +match_guaranteed = true at significantly higher rates. As such, you can confidently allocate your coveted ad spend and provide personalized user experiences, knowing that you can rely on Branch to help you accurately recognize your customers everywhere.

Ready to improve the accuracy of your linking and attribution? Contact our sales team today to find out how we can help!

Branch is a mobile linking platform providing unified mobile experiences and measurement for more than 50,000 mobile apps, including Airbnb, Pinterest, BuzzFeed, Tinder, Foursquare, Yelp, and Sephora. Branch’s linking platform can help you grow your mobile app through features like deep linking, sharing, referrals, mobile banners and interstitials, custom app onboarding, and unified attribution across platforms and channels. Learn more about Branch or contact sales today.
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