How to organize it-navigation around the building?

Question

WiFi

Good day.
After walking through huge buildings like shopping centers, the question arose: Are there any electronic means of navigating the buildings? I don’t take into account terminals or sophisticated access control systems with analytics or just cards on the phone. Ideally, something like a building plan with a mark of your location in real time and with marks, let's say an office is such and such, a fire exit there or here you can recharge your phone.
If you simplify the task even more - a building with many Wi-fi points, a smartphone with an interactive map and your mark on the plan.
Maybe some other tech. solutions?

Answer 1

In the Russian Federation it will be in 20 years.
In the meantime, use 2gis (on your smartphone) - there is navigation through large centers, for each floor, indicating what is in which room. Fire exits and other trifles are, of course, not indicated there. Only large objects. GPS
accuracy will not allow you to determine which door you are standing in front of and which window you are looking through. In addition, the signal drops indoors.