The difference is pretty simple:
Scanning,
is based on your Clear Sences,
and looks for actual Energy patterns,
Spritual connections,
it’s “the real deal”.
While Cold Reading,
is more scientific,
and based on interpreting your behavior,
your mirco-expressions,
and reading your subconcious understanding,
of what you believe to be true.
Both,
are forms of Divination.
Where Scanning is more esotheric,
and actually seeks the connection to higher forces,
to aid you, in getting the informations,
Cold reading,
often denies the existence of those forces,
and tries to showcase,
that similar effects can be achieved by simply using tools and methods of Psychology.
However,
both forms,
can accurately tell about past,
present and future,
of complete stranger persons,
which you haven’t met before.
It’s useful to know about both forms of techniques,
but consquently,
you’ll stick to the one,
that feels more natrual to yourself.
The best form of divination,
you can pull effectively,
without much tools needed,
is to breethe yourself into the person you’re reading,
directly accessing their own soul,
and basically doing a magick form of cold reading,
which,
if considered honestly,
is a form of short-term possession.
It’s extremely effective,
but also will make people suspicious about you very quickly.
That form,
should be used together with some form of distraction,
ideally either by handreading / Tarot cards, etc.
Or,
by not revealing that you’re reading the other person at all,
i personally like it very much,
when i have the other person drinking,
ideally heavy alcohol,
since that makes them more suceptable to being forced out of their body,
and turning open towards possession willingly,
without much extra effort.
In such a case,
you want to hold the conversation rather casual,
and ask about the same stuff you’re reading on,
so for example:
If i want to know,
about the work enviorment of my target,
and want to identify the person he struggles most with,
at office,
i’ll ask casually:
How did last workday go.
When the person starts answering,
i remain seemingly “active listening”,
while in actuality,
i’m pulling inside my opponent,
to go in his memory,
to specifically the details i want to know about.
By just casually dropping in “guesses”,
which i just substracted from his mind,
i can both make sure he stays on track,
as well as keeping the focus on just casual gossip,
so the other person thinks,
i’m just nice for listening to their bullshit,
and being “a friend” there.
While in actuality,
he willingly serves me,
with all the precious informations,
that would normally be closely guarded,
for being importend to the success of his Company.
That can be extended,
by offering help,
and suggesting ways of how to deal with situations,
leaving the person to now willingly talk about other persons,
which aren’t even there,
at the scenery,
with us,
but due to me accessing the memory of the person i read,
i can jump further,
into their moods and decisions taken during the time they spendt together.
That way,
i can read someone,
without talking to him at all,
by accessing someone out of his enviorment.
That “double linked” form of reading,
i’ve found most people not really capable of understanding,
and so i had people consider it bullshit,
when i blatendly told them,
that i’m casting a spell,
on a seemingly random stranger,
passing me on the streets,
when in actuality,
that person would meet up,
with my actual target,
later on,
and conduct my spell without even knowing it.

Sincerely,
¥’Berioth