Chrome uses two proportions to appreciate how efficient a promotional promotion was: exactly how many Chrome installations were obtained through an advertising promotion, and how much Chrome usage and traffic to Bing are driven by a strategy.
Determine installments or reactivations of Chrome through a campaign, Chrome will be sending a token or an identifier distinctive to your tool to yahoo at the very first publish of Chrome, in addition to the first research using Bing. Exactly the same token should be delivered if Chrome is later on reinstalled initially introduction as well as basic use of the Omnibox after reinstallation or reactivation. Instead keeping the token on the computer, it’s created when necessary through inbuilt program information definitely scrambled in an irreversible fashion. On apple’s ios, Chrome makes use of the IDFA for checking installations acquired by a campaign, and it can feel reset in iOS configurations.
Crash research incorporate program records obtained in the course of the crash, and may also have web site URLs, steps used of the consumer before the collision, and/or information that is personal according to that which was occurring in the course of the collision
To measure hunt and Chrome application driven by a particular 
campaign, Chrome inserts a promotional label, maybe not special to you personally or their product, inside the queries your perform online. This non-unique tag contains details about how Chrome had been received, the times when Chrome is set up, therefore the day after basic research had been performed. For desktop versions of Chrome, Chrome generates a promotional label, when the promotional installation token expressed in the earlier part indicates that Chrome has been setup or reactivated by a campaign on a computer device with not already been of any venture but. For Chrome on Cellular phone, a promotional label is delivered no matter what the source of installations.
The promotional label is actually generated using an application library called “RLZ” and looks much like a€? 1T4ADBR_enUS236US239 a€?. The RLZ library had been totally open-sourced in . To learn more, please understand on view, for RLZ post about Chromium blog as well as the article a€?Ideas on how to Look Over An RLZ Stringa€?. On Android, this advertising label could be a readable string like “android-hms-tmobile-us” rather than an RLZ string, and it is perhaps not distinctive to either your or your device.
This non-unique marketing tag is included whenever doing queries via yahoo (the label looks like a factor starting with ” rlz= ” when induced through the Omnibox, or as an a€? x-rlz-string a€? HTTP header). We make use of this records to measure the online searches and Chrome usage powered by some advertisement.
If use reports and crash reports include enabled, the RLZ string is sent combined with report. This allows you to boost Chrome based on differences which are limited by particular geographical areas.
For all the desktop version of Chrome, it is possible to opt-out of sending this facts to yahoo by uninstalling Chrome, and setting up an adaptation installed right from google/chrome. To opt-out of giving the RLZ string in Chrome OS, click Ctrl + Alt + T to open up the crosh shell, kind rlz disable accompanied by the submit trick, immediately after which restart your own device.
Consumption reports and collision research
Chrome has a characteristic to automatically deliver practices data and crash research to yahoo so that you can assist in improving Chrome’s feature set and security.
Application research include details such as for instance system info, tastes, graphical user interface function practices, responsiveness, abilities, and mind usage. This particular aspect is enabled automatically for Chrome installments of version 54 or afterwards. It is possible to controls the function into the “Sync and Bing providers” portion of Chrome’s options.