I suddenly have a new strange symbol on my S6 Edge screen and have no idea what it is but if I touch it, it locks my phone up. The only way I can get it unlocked is by swiping the edge. I'm able to move it around but it appeared while away from and charging my phone so I wasn't accidentally playing around with settings or anything. It appears like a remote perhaps.
What is it?
Edit: I'm with Bell, using version 5.1.1 and have attached an enlarged a screenshot (it's the same size as a Messenger Chat Head).