Remote technology driven hypno-control devices could be hovering overhead near your vicinity at this very moment. There's really no way of knowing and thanks to their solar flare dual-layer Faraday shielding they'll probably still beam thoughts into your head long after civilization has collapsed.
Some recipients of their attention have stated that the effect is akin to "Having your thoughts caught in a Klein Bottle that has permanent j-pop blaring on the speakers, 24/7 in an eternal loop."