It´s quite unnerving when you come to the realization that you are under close scrutiny and someone has locked onto you..

It can feel like you have been targetted (for termination ?) like Sarah Connor in the Terminator movie.

If this happens in the confines of your bedroom, it could be a prelude for things to come..

If this happens in a public setting, try to focus intensely on something else with even more intensity. The starer will soon wonder about the bewildering look on your face and be curious as to what the hell you are staring at.. thereby unlocking their stare.. it works.

Play the game.

If you´re travelling on public transport and have a newspaper or magazine handy, make a tear in the paper, hold it up and stare back at them through the tear.. that should freak them out ..

I should include a health and safety warning.
Please dont try this on the elderly.
They could simply be staring because they have poor vision or even be blind..