The green hotspot QR Code contains an Android deep link for the hotspot

Scanning the hotspot QR Code with any QR Code reader will open the application on the smartphone and guide you to the hotspot by drawing a green line to it.

The distance and walking time will also be shown. If the GeoAR.it app is not already installed on the Android device then the user will be taken to the apps install page on the Google Play store.

Print the hotspot QR Code on each part of a map where you want to guide people to.

Users can also select the hotspot from the hotspot listbox to be guided to the hotspot. 

You can use any QR Code scanner such as Zxing QR Code reader (Link below)