Possibility to set location of object by lat/long

Please give us a possibility to manually set lat/long for any database item that uses geolocation. If i want to show a point to users in the woods - i can’t get working object with geolocation cause i can’t manually set lat/long coordinates that i can use for calculating distances between current device and object. Right now i need to use search option with google and it gets lat/long from it automatically.. but what if my point on surface has no address? How can i let database know right lat/long?

What i need :

  1. Users can insert geolocation of objects manually ( especially lat/long).
  2. App can compare distance to such objects. by using obj_location with manually inserted lat/long is within X km/mi of Current device location.