In 2022, Google began changing the availability of the information available in User-Agent strings across their Chromium browsers. The change is to use the set of HTTP request header fields called Client Hints. Through this process, a server can request, and if approved by the client, receive information that would have been previously freely available in the User-Agent string. This change is likely to have an impact on publishers across the open web that may use User-Agent information today.
To explain what this change means, how it will impact the AdTech industry, and what you can do to prepare, we spoke with Nate West, our Director of Product.
What is the difference between User-Agents and Client Hints?
A User-Agent (UA) is a string, or line of text, that identifies information about a web server’s browser and operating system. For example, it can indicate if a device is on Safari on a Mac or Chrome on Windows.
Here is an example UA string from a Mac laptop running Chrome:
To limit the passive fingerprinting of users, Google is reducing components of the UA strings in their Chromium browsers and introducing Client Hints. When there is a trusted relationship between first-party domain owners and third-party servers, Client Hints can be used to share the same data.
This transition began in early 2022 with bigger expected changes beginning in February 2023. You can see in the above example, Chrome/109.0.0.0, where browser version information is already no longer available from the UA string on this desktop Chrome browser.
How can you use User-Agent device attributes today?
UA string information can be used for a variety of reasons. It is a component in web servers that has been available for decades. In the AdTech space, it can be used in various ad targeting use cases. It can be used by publishers to better understand their audience. The shift to limit access and information shared is to prevent nefarious usage of the data.
What are the benefits of Client Hints?
By using Client Hints, a domain owner, or publisher, can manage access to data activity that occurs on their web properties. Having that control may be advantageous. The format of the information shared is also cleaner than parsing a string from User-Agents. Although, given that Client Hints are not the norm across all browsers, a long-term solution may be needed to manage UA strings and Client Hints.
An advantage of capturing and sharing Client Hint information is to be prepared and understand if there is any impact to your systems and processes. This will help with the currently planned transition by Google, but also should the full UA string become further restricted.
Who will be impacted by this change?
Publishers across the open web should lean in to understand this change and any potential impact to them. The programmatic ecosystem supporting real-time bidding (RTB) needs to continue pushing for adoption of OpenRTB 2.6, which supports the passing of client hint information in place of data from UA strings.
What is Google’s timeline for implementing Client Hints?
Do businesses have to implement Client Hints? What happens if they don’t?
Not capturing and sharing with trusted partners can impact capabilities in place today. Given Chromium browsers account for a sizable portion of web traffic, the impact will vary for each publisher and tech company in the ecosystem. I would assess how UA strings are in use today, where you may have security concerns or not, and look to get more information on how to maintain data sharing with trusted partners.
We can help you adopt Client Hints
Reach out to our Customer Success team at tapadcustomersuccess@experian.com to explore the best options to handle the User-Agent changes and implement Client Hints. As leaders in the AdTech space, we’re here to help you successfully make this transition. Together we can review the options available to put you and your team on the best path forward.
Get in touch
About our expert
Nate West, Director of Product
Nate West joined Experian in 2022 as the Director of Product for our identity graph. Nate focuses on making sure our partners maintain and grow identity resolution solutions today in an ever-changing future state. He has over a decade of experience working for media organizations and AdTech platforms.
Latest posts
The Tapad Device Graph™ Complements Freckle’s IoT Capabilities to Extend Scale and Precision of Audience Data New York, NY — December 6, 2017 — Tapad, part of Experian, is the leader in cross-device marketing technology and Freckle IoT, the global leader in multi-touch, offline attribution, today announced they are partnering to provide brands with a holistic and insightful view of their customers, in predefined locations in all global markets. Starting today Freckle IoT will be leveraging the Tapad Device Graph™ to supplement the company’s data set to offer brands more granular attribution data. Consumer’s online behavior is becoming more and more complex, with the average consumer owning three or more devices and 35 percent of consumers converting on a different device from the one on which they started their research. These interactions become even more complicated when considering how online interactions and media impact offline sales. The collaboration between Tapad and Freckle, which combines Freckle IoT’s persistent location data with Tapad’s proprietary cross-device technology, is an important step in empowering brands with the information they need to better understand how digital media, consumed across multiple devices, is impacting offline attribution. Using its opt-in, first-party data, Freckle IoT helps brands measure the effectiveness of their advertising by independently matching media spend to in-store visits. Tapad’s technology extends Freckle’s data-set by allowing brands to access additional deterministic and probabilistic data, at scale and across all devices, to analyze consumer behavior ahead of in-store purchase. “Combining our technology with Tapad’s identity-driven solutions was a natural fit for our business,” said Neil Sweeney, founder and CEO at Freckle IoT. “With our unbiased, agnostic measurement and Tapad’s precise and privacy-safe data set, we knew this partnership would be a strong complement to providing more effective results for the needs of our brand partners.” “Freckle IoT is a valuable partner for Tapad as our cross-channel attribution capabilities continue to expand at global scale,” says Chris Feo, SVP, strategy and global partnership at Tapad. “Marketers today need a tool that can address the online and offline disconnect throughout the consumer journey. Freckle’s IoT innovations combined with the Tapad Device Graph help address this need by providing brands, across multiple verticals, accurate and precise identity-driven data powered by true consumer behavior — online and offline.” For more information on Freckle IoT’s measurement offerings, please visit www.freckleiot.com. Contact us today
London – 24 November, 2017 – Tapad, part of Experian, is the leader in cross-device marketing technology and continues to broaden its reach across EMEA. The business today reported a 20 percent growth in the scope of its regional device graph, a data set used by organisations to map consumers to their devices, enabling better, more personalised cross-device marketing. This news complements Tapad’s recent expansion of its UK team with the hire of experienced solutions engineer, Davide Rosamilia. As the demand for cross-device technology solutions continues to grow around the globe, coupled with the emergence of regulations such as Europe’s General Data Protection Regulation (GDPR), Tapad is committed to offering suppliers the greatest level of insight without compromising consumer privacy. Since Tapad started licensing its proprietary Tapad Device GraphTM just over a year ago, demand for the company’s technology has experienced significant growth. New supply partnerships and proactive data sourcing have also meant an increase in devices across key markets, which contribute to the overall 20 percent growth of the EMEA device graph, including a 44 percent increase in the U.K., 47 percent in France, and 85 percent in Germany. “We’re continuing to invest heavily in growing our regional device graph, allowing us to better meet the needs of EMEA marketers as they strive to reach individuals with greater precision in some of the most tightly regulated marketplaces worldwide,” said Tom Rolph, VP EMEA, Tapad. “This year, we have also welcomed 10 new data suppliers whom we’ve helped to increase cross-device amplification, attribution and audience extension, helping to further set us apart in the marketplace and successfully expand our EMEA presence.” Available around the world, the Device Graph provides access to Tapad’s globally compliant and privacy-safe datasets across EMEA, APAC and the U.S., and offers deeper knowledge of consumer preferences, purchase intent, and conversion behaviors. “Tapad has shown a unique ability to adapt to the nuances of the local EMEA market and display impressive growth without sacrificing dedication to privacy,” said Alistair Hill, CEO and Co-founder at On Device Research. “When we started vetting technology vendors, we needed to be sure that we selected a partner that could offer compliant and privacy-safe datasets to operate within our stringent data standards. Tapad’s probabilistic solution offered us greater scale, greater device reach, and increased engagement without compromising on privacy.” Contact us today
The Tapad Device Graph™ Will Expand Sizmek’s Cross-Device Reach and Improve the Efficiency and Precision of Digital Advertising NEW YORK, November 16, 2017 – Tapad, part of Experian and a leader in cross-device marketing technology, today announced a new global partnership with Sizmek, the largest independent buy-side advertising platform delivering impressions that inspire. By integrating the Tapad Device Graph™, Sizmek will enhance its AI-powered predictive capabilities to deliver accurate, cross-device messaging at global scale in a privacy-safe environment. Combined with Sizmek’s existing data enablement, creative optimization and media execution capabilities, the proprietary Tapad Device Graph improves the efficiency and precision of digital advertising by accurately matching people and devices. This enables advertisers to get a clear view of individual customer journeys, achieve scale without compromising on efficiency, and uncover new opportunities for conversion. Sizmek’s customers will have access to Tapad’s globally compliant and privacy-safe datasets across the Americas, EMEA, and APAC. With deeper knowledge of consumer preferences, purchase intent and conversion behaviors, Sizmek and its customers are able to enhance advertising strategies including cross-device audience identification and more. “Tapad is known for their strong cross-device capabilities, and their offering is an excellent addition to our growing program for best-of-breed data and measurement partners" says Mike Caprio, Sizmek’s Chief Growth Officer. “For our customers, this partnership will add further people-based marketing precision and reach to our comprehensive offerings around creative optimization, data enablement and media execution." “Sizmek’s adoption of industry-leading AI and machine learning campaigns will be a great complement for the Device Graph,” said Chris Feo, SVP, strategy & global partnerships at Tapad. “Our ability to create smaller, more customized segments in conjunction with Sizmek’s AI modeling will deliver efficiency, effectiveness and increased ROI for marketers worldwide.” This partnership comes at a time of a massive shift in the marketing technology industry. Companies like Tapad and Telenor, as well as Rocket Fuel and Sizmek, are joining forces to adopt those technologies that are most efficient and accurate at reaching consumers at scale in a personalized and non-intrusive way. The combination of Tapad and Sizmek’s offerings will provide international marketers with exceptional resources to lead a more cost effective and results driven campaign. Contact us today