that's from es file explorer. go to settings >logger floating widget settings >uncheck enable logger floating widget.
Nothing to see here, just the CIA's hole into your living room. 😁
If you still want to use es, i suggest looking into this thread especially the edit in OP. you will find an older version that has pretty much all the features you need but without the bloatware. it is a signed version, that will not be updated by play store.
Also remote navigation is much nicer in this version than it is in recent versions.
Thanks for all the tips. I'll uninstall ES File Explorer ASAP.
I'm guessing it's related to Kodi or SPMC, as whenever I run either of them the circle appears on the right side of the screen, sometimes changing color. But even when I exit Kodi and run other apps the circle persists. It's REALLY annoying and I can't figure out how to get rid of it apart from force quitting Kodi. Any thoughts how to kill it?
es file explorer has turned into spyware. I would uninstall it and find another file manager program.