Different unicode versions on various devices

Question

I created a Bitcoin Profit Calculator and I would like to use the "bitcoin symbol" as a character. The official symbol was accepted to Unicode in 2015 and first appeared in Unicode 10.0 which was released this year.

Currently I'm using Ƀ b/c it has been part of Unicode for a long time. I would like to switch to the new and official symbol ₿. The Problem is that only up to date Windows 10 and Android O support it currently. Which means most of the people will just see the missing-character-placeholder.

The question now is:

Can I somehow (HTML/CSS or Javascript) show the new symbol on every device which supports it, while simultaneously showing something else on the rest?

Thanks in advance. I will leave you with some background info you might find interesting: https://en.bitcoin.it/wiki/Bitcoin_symbol

Answer 1

Apparently this is not possible since you can not detect if the OS knows the character or not from a standard browser.

Possible workarounds are svg paths/images or as @SLaks suggested: a web font with a similar looking character.