[re-lre-l]

I'm just curious — what could be a potential use case for such things on the backend? For bot detection, it seems quite unreliable. Would it be more suitable for server-side rendered UIs? Or am I missing something?

[ChrisMarshallNY]

The most obvious use, is to have a server that only delivers content relevant to the end-user device.

This would be very useful in limited-bandwidth scenarios.

Responsive sites aren’t the same. They deliver all the data, but filter it in the UI.

[yjftsjthsd-h]

Obviously the formatting differ, but why would you deliver different content to different devices?

[tossandthrow]

Analytics is the area I have seen this used the most.