Weird icon on toolbar

[Tricky001]

Maybe dumb question but what is that icon that flashes in the tool bar ....that looks like an eye with lashes??? Lol that's the only I can describe it??? It comes up quick and goes away in white ...
Tks in advance....
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[Bbeelzebub]

Smart Stay

 

[Tricky001]

Awesome tks....

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[robh2]

Its a stalker )