Player cards - where can I expect them to work?



After several applications for approval, I got the email form Twitter that our Player Card was approved.

Now I see that when we post links to our web pages on our own account (@hykooco) the player card appears properly, with the playback control UI only on a desktop browser.
We’re still not seeing our player card on any native clients – native OS-X, iOS and Android apps – or on mobile web browsers (iOS and Android).
We’re also not seeing the player card on desktop browsers when other users share our pages.

Where should we expect Player Cards to appear?