Edited:
Making sure to make a path of trailing the information to the commons that is able to redirect from the beginning point as subliminal, i.e. I have reported there is a location point where to find the hidden message then to another hidden spot where the message resides then the person gets the message and can claim a reward. If you can find that person who can follow these then these are the queues of seeing how willingly the effort comes along with it then can have another person who is in good connection with the person and try to see if he/she picks up the information without looking consciously, and grab information from the person that's connected too. All in all, it's trial and error for an individual person and it takes a lot of time and patience. This is all just an idea.
They could also be on some particular substance or have higher knowledge along with coordination and balance with the psych. They may remain unconsciously knowing something is particularly there; it’s very hard to pick up the sensibility in which, is a very hard deal to break through to find the right person. It is in fact very wise to keep things subliminal as possible to find the subliminal person because it attracts them and to remain subliminal. Once you find the particular one that seem to be unconscious of but really is consciously aware. The person doesn't have to say what or look at your body but in their possible peripheral vision. Sometimes you just can't rule it out, some are just too good to be true; some are way too good to be true. It's in some sort of higher intelligence to think before they react. And typically intuitive personage are capable of this but not all are good responders/followers.
*1
Also it's like a person has trained itself into a unconcious and sub
concious state to not react. But is conciously able to react as if it
were internally.
As for a matter of fact I have for a very long time didn't hear a sound until the age of 3 then picked up on hearing. This has made me become effective at my picking up skills in a very correct way. I started formulating my own hand signs to my parents until they have found I was deaf. I was typically not recognizing my hearing senses so it allowed me to balance my sense over sight vs hearing. *2
*1 https://www.psychologytoday.com/articles/200705/gut-almighty
*2 https://en.wikipedia.org/wiki/Prelingual_deafness
Added: I’m sorry I've lost track in the post about the autism part scratch that. Lost senses from the early age 'till the age of 3 are capable of mastering to accommodate the other senses to a heightened level. The overall senses of the brain is training itself to accommodate the loss senses. Such as like the (anti-)phantom sense, possibly become the 6th sense. I.e a person with lost sense regain it’s natural balance. I can relate to this book. It's in .PDF format *3
Your brain changes with every experience: every sight, every sound, every touch, every thought, every emotion. It then interprets future experiences based on the past experiences. But a person with hearing disability can't pick up the subliminal messages as well as near perfect hearing. *4
Autism puts things together in a complex puzzle.*5
So with this attributed with number *3 & number *2. It can put all the puzzles together and fills in the missing puzzles as a dummy puzzle to accommodate then this goes back to number *1
I tried to render this question for the right answer as rational as possible lol, I sense there is something there but not quite understood right. It is a plugin and play kind of deal with there are other things I can recognize is there but there's no way how I can precisely explain or to even convey in this language. It's an onomatopoeia along with transpositioning the language involved and it may seem irrational when really it's rational. Trying to keep all of this rational as possible.
*3 http://richardlouv.com/images/uploads/excerpt-the-nature-principle-richard-louv.pdf
*4 http://ilslearningcorner.com/2015-06-the-age-when-your-childs-brain-stops-learning/
*5 http://childdevelopmentinfo.com/child-psychology/autism-aspergers/