Let's suppose that you see a girl in the street but then you can't see her anymore. Is it possible to find to that girl for example with astral projection? :evil:
I think only if you have a strong emotional connection to her in any way.
So if you´ve only seen here and you like her face, that´d probably not enuff.
Back in the old days when the governement used remote viewing to spy on other countries (Project Stargate) they used to locate missing people. Im sure OBE's wouldn't be much different in producing the same effect.