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.
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

To set your brand apart from the competition (and thrive!), you need to get to know and communicate with your customers on a more personal level—this means knowing more than just their email or mailing address. It means building a relationship with them to turn them into loyal customers who keep coming back. To make this happen, retail marketers must engage with customers across all verticals and invest in true data-driven advertising. Consider the following: What do my customers do? If you know more about your customers’ lifestyles, interests and spending habits, you will have a better understanding of how they choose to spend their money and free time. Once you understand your core customer base, you can move on to how and when you should reach them. This starts with segmenting your customers and then reaching them across their preferred channels. You should then learn what motivates your customers in order to understand their buying behavior. Do they buy items spontaneously or do they spend a lot of time researching? Do they only buy things with a coupon or is free shipping more important? Lastly, determine what marketing is showing ROI so you can optimize your marketing campaign. To ensure your efforts are showing results and your marketing budget is getting the most bang for the buck, attribution is critical. Retailers should strive to get more value out of existing data, supplement it with third-party sources, and find better ways to manage it and extract valuable insights. Experian’s Customer Data Engine is the perfect solution to assist retailers with this challenge. This customer data platform helps provide you with a complete picture of online and offline customer engagement and delivers the data, tools, and insights needed to make decisions on reaching customers and lookalike prospects. Customer Data Engine is a centralized platform where first- and third-party data is managed and updated on an ongoing basis in a secure environment, providing retail marketers with analytical tools, lookalike prospects, campaign management, audience distribution and closed-loop measurement. Once retail marketers have a deeper understanding of what they need to know about their customers, they can create customized audiences using this data. Retailers value first-party data and often look at it first. Usually, this refers to online data about customer activity on a website or app, and can come from form and email submissions, views of merchandise or devices and things people searched for online. Although first-party data is gold, there is almost always additional information needed to fill in gaps. For instance, the need for recency, frequency and monetary (RFM) data is crucial. RFM data is a way for retailers to analyze their customers by using recency (how recent the customer made a purchase), frequency (how often a customer makes a purchase) and monetary data (how much money a customer spends on purchases). It gives the retailer the details of when the last time the customer made a purchase, how often does the customer make a purchase and how much did the customer spend. With this information, they will know who their most valuable customers are and be able to create customized audiences. To get a deeper understanding of your customers, solutions such as Experian’s ConsumerViewSM database can be leveraged to provide you with demographics, life event triggers, purchase data, lifestyle segmentation data and more. With thousands of data attributes available, it can take any business to the next level. According to global research firm, Coresight Research, retailers in the United States have announced 5,994 store closures in just the first 15 weeks of 2019. Changing consumer demands, and a volatile economy have made it difficult for retailers to keep pace. However, retail is not going to go away, and brands just need to be smarter about how they conduct business. Making sure you know and understand your customers is one of the ways to ensure repeat visits and set yourself apart from the competition. By enriching your data with 3rd party data from Experian, Customer Data Engine allows you to know and target your customer the same way that Direct to Consumer brands and retailers can and provides you with a full 360-degree view on what your customers are doing and how they are interacting with your brand. To learn more about Experian’s Customer Data Engine, contact us at (877) 902-4849 or experianmarketingsolutions@experian.com to learn more.

For decades, financial institutions relied on direct mail marketing and mass media for credit card offers and invitations to apply (ITA) for loans. Today however, credit marketing is going digital. In fact, according to Statista, financial services ranks 3rd in total digital ad spend this year. Lenders need to deliver relevant credit offers to consumers in the spaces and platforms where they interact. Below are three best practices to help financial services marketers make the most of their digital budgets and strategies. 1. Test new acquisition channels Consumers are no longer just in one place. They are constantly moving around and business strategies need to encompass that. Today’s consumers have multiple devices – a mobile phone, a TV, a laptop, a smartwatch, etc. and each of these devices uses a different tactic to attract consumers. Marketers need to reach their audience across all the channels with which they are engaging. To maximize performance and profitability, lenders need to leverage multiple channels to target and re-target their intended audience. They need to expand the reach of tailored prescreen ad campaigns by adding email, digital display ads, or other online channels to the traditional direct mail channel. This will help increase response rates, decrease length of time to conversation, and provide insight on consumer behaviors and preferences that cannot be achieved with a direct mail offer alone. 2. Target an audience that is right for you. Through a streamlined credit criteria selection process, and Experian’s expertise in audience creation, you now have the power to target the best consumers for your business needs in a fully customized approach. Financial services marketers should isolate appropriate populations – enabling you to make unique offers for different consumer segments and target them in the channels they leverage. In addition, you need to ensure your data is accurate and compliant. Fresh, accurate data enables you to pre-select the best prospects for your business need—right when they are most motivated to respond—and avoid making preapproved offers to nonqualified consumers. Also critical is that while we are able to use regulated data sets to reach consumers, we need to do so with extra caution while meeting FCRA guidelines. It is imperative to honor consumer opt-outs across all channels and ensure you have audit rights with media publishers. The Experian Ascend Technology Platform gives financial institutions the power to integrate client data, industry-specific data feeds and the power of Experian’s unique capabilities in data, analytics, machine learning and advanced AI to deliver enhanced opportunities throughout the customer lifecycle, including lending offers to acquire new customers and cross-sell to existing ones. 3. Test and adjust your campaigns Before the world of digital, it was difficult for financial institutions to track campaign impact on audiences. By employing online promotions, lenders can see how much interaction consumers are having with their promotional media. Financial services marketers should take processes and campaigns that have worked in the past and perform small, iterative tests using different channels. We believe that by adding a digital touch to a client's direct mail prescreen campaign, there is the potential to experience a lift above direct mail response rates; decreased length of time to conversion, and we can provide insight on consumer behaviors and preferences that cannot be achieved with a direct mail offer alone. It is important to test and optimize accordingly. Experian is also at the forefront of the digital credit revolution with Amplified Prospecting™. Experian’s Amplified Prospecting empowers lenders to deliver relevant firm offers of credit to prescreened consumers via multiple digital channels, including email, online display advertising and social media. Simply put, it allows you to timely engage the most desirable consumers where they’re increasingly consuming information and media today – improving your response rates and return on marketing investment. Experian is a leader in the credit revolution, offering more ways for consumers to secure credit including the industry-first Text for Credit™, which allows users to initiate and complete the credit application process within minutes with a simple text message. In addition, Experian recently introduced Experian Boost, a revolutionary new online tool that can instantly improve your credit scores and help the 100 million Americans that don't have access to credit today, either because their credit scores are too low, or because they don't have enough credit history. With faster, more efficient data integration and processing you can more accurately target leads, achieve better response rates, and optimize your marketing spend. To learn more about Experian’s Financial Services solutions, contact us at (877) 902-4849 or experianmarketingsolutions@experian.com to learn more!

Sixty-Nine Percent Organic Sales Growth Spurred by Expanded Business and Continued Investment in The Tapad Graph™ NEW YORK, May 7, 2019 /PRNewswire/ — Tapad, a part of Experian, a global leader in digital identity resolution, today announced a record start to the year, following its highest earning year in the company's history. Since January, Tapad has experienced a 69 percent organic increase in global revenue; with strategic investments in talent, continued high retention rates, and an expanded range of clients across global markets. Globally, Tapad increased its client base across multiple categories and verticals, catering to agencies, brands, telecoms, and data providers. The Tapad Graph™'s varied use cases and differentiated global scale have been instrumental to the company's overall success to-date. With an ongoing investment in product, and expected feature releases slated for 2019, the company anticipates these accomplishments to continue. "Since the inception of our business, Tapad has heavily focused on enabling marketers to boost the performance of their campaigns with the help of our advanced digital identity resolution technologies," said Sigvart Voss Eriksen, CEO at Tapad. "While we continue to grow, creating privacy-safe solutions that solve marketers evolving needs remains integral to our evolution. As pioneers in cross-device, we're constantly innovating and pushing ourselves to be at the forefront of industry change. Our leadership in the space is recognized across the industry, as is evident by our current success." In addition to partner expansions, Tapad also invested in new talent. In February, Tapad announced Ajit Thupil as the company's first Senior Vice President of Identity, deepening the company's commitment to creating ground-breaking digital identity resolution products for brands, agencies and platforms. Tapad's investment in talent has been recognized by One World Identity's 2019 Top 100 Influencers in Identity Award and by ClickZ's 2019 Marketing Technology Awards. "At Tapad, our focus is on continuously advancing our digital identity resolution products to cater to the needs of marketers across industries," said Chris Feo, SVP of Global Data Licensing and Strategic Partnerships at Tapad. "As a part of that commitment, we are consistently growing our partner base, product features, and widening our reach on a global scale. We're excited to sustain our growth throughout 2019." To learn more about Tapad and our digital identity resolution products, visit Experian.com Open job opportunities across the globe can be found on Tapad's career page here: https://www.experian.com/careers/ About Tapad Tapad, Inc. is a global leader in digital identity resolution. The Tapad Graph™, and related solutions, provide a privacy-safe approach to connecting device identifiers to brand and marketer data, thereby allowing marketers around the world to maximize campaign effectiveness. Tapad is recognized across the industry for its innovation, growth and workplace culture, and has earned numerous awards, including the TMCnet Tech Culture Award. Based in New York, Tapad also has offices in Chicago, London, Oslo, Singapore and Tokyo, and is a wholly owned subsidiary of Telenor Group. Contact us today!