What you're referring to is the user agent string, "a technical bit of information that your web browser sends every time you load any website; we have decoded it to figure out what browser, operating system and device you are using". It can be read using JavaScript, see here: https://hacks.mozilla.org/2013/09/user-agent-detection-history-and-checklist/
What you're referring to is the user agent string, "a technical bit of information that your web browser sends every time you load any website; we have decoded it to figure out what browser, operating system and device you are using". It can be read using JavaScript, see here: https://hacks.mozilla.org/2013/09/user-agent-detection-history-and-checklist/