How can I put object of ARSCNView into real position

I coding app indoor navigation using iBeacon with AR for my thesis

I have no idea for put ARSCNView in realworld position and object fix position.


Now

I can make object to show in front already but if i fix position x,y,z of object it still wrong.

Anyone can help me please.


looks similar to

https://www.youtube.com/watch?v=zohRwHzu9gA&feature=emb_title


Thank you 🙏