Geolocation without GPS module

[Ericke Rafael Gallardo]

Good day! I'd like to ask if it is possible to geolocate without GPS module? I understand geolocation is a used if GPS is unreliable in some circumstances like in buildings or any indoor facilities.
https://www.youtube.com/watch?v=QhdvIJ_qlFQ

School project purposes. I wanna use the Omega2 as a wearable tracker. Thus, wifi might be used to geolocate.

[ccs hello]

You have to know there are somethings G did not say.
G knows much more than what you use geoloc API requests online to get it to help you pinpointing the location.