Creepy program creation. HOOOW?

Question

How You can create a program that measures your height/amplitude above the ground?

Idea is that program talks with user creepely, tells him strange story happened near his geo location, says in which floor(approximately) he is on and so on to scare him.

So for knowing the floor/level he is on program should know amplitude/the height he is in above the ground.

Answer 1

Maybe the GeoGoogle or GeoLite libraries. I’m not well-versed in them.
For web apps, you could use the google maps api

Answer 2

What programming language?

Answer 3

it shoul be an android app, so i guess java or web app)

Answer 4

GeoGoogle and GeoLite, ok. Thanks Ariela, appreciate that!!

Just a few seconds ago I found this tag in html5 course "getCurrentPosition()". Also there is said that you can find floor level. Gotta find how to use it.