What is the reason behind the presence of "navigator.maxTouchPoints = 10" in Chrome's desktop version?

Utilizing the user-agent to determine whether the browser is mobile or desktop has been my strategy. However, when switching the Android browser to pc-mode, the user-agent value changes to "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.74 Safari/537.36". This prompted me to use navigator.maxTouchPoints > 0 as a confirmation for a mobile environment, but surprisingly, Chrome on desktop returns a value of 10 for navigator.maxTouchPoints. I'm curious about this discrepancy and wondering if there are alternative methods to identify mobile devices accurately.

Answer №1

If the device is a desktop or laptop with a touchscreen, maxTouchPoints will display a number greater than zero.

It's important to test for the specific features you need on mobile devices and not rely solely on userAgent, which can be easily manipulated to mimic a desktop environment.

Additionally, Chrome is aiming to minimize user-agent strings to prevent tracking and profiling. Learn more about User-Agent Reduction

For tips on detecting mobile devices effectively, you may find this answer helpful: What is the best way to detect a mobile device?

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