Geolocalization in formulas

[cpicanco]

Hi guys, I would like some advice to create a custom function (in formulas) for geolocalization. My initial idea is to create a "isNearOf" function that will return true if the current longitude and latitude is near of a given longitude and latitude (lets say 50m from a map field, for example), false otherwise and null if GPS is not available.

Is it feasible? I would like to create a pull request for this feature if you think it fits the project aims.