You can track someone on Google Maps as long as the person you want to track has opted into sharing their location.

Responding to this trend, Google introduced Incognito mode for Google Maps, allowing users to use the service without saving their location history to their Google accounts.

Google Maps prompts you to enable Location each time you open it on a Samsung phone, which can be super inconvenient. Luckily, you can automate your Samsung phone to do exactly this.