Here I have made a realtime GPS tracker device, which you can track from anywhere in the world, using Raspberry Pi, Python, and Javascript. At the end the client-side will look something like this:
Read this blog for detailed information about the codes and how to use those https://sparklers-the-makers.github.io/blog/robotics/realtime-gps-tracker-with-raspberry-pi/
You can also watch these video tutorials for the same:
Part 1 : https://youtu.be/NDgTUIwGMS4
Part 2 : https://youtu.be/EFBNMPnWpfU
Arijit Das