Re: Geofencing for logins?
At some point, geolocation was relevant to my job. At that time I found out that while most IP addresses in the USA have a quite precise geolocation, about ten percent have a geolocation that basically means "USA". But since each geolocation has precise coordinates, "USA" had coordinates that matched a little farm in Kansas.
They have (usually armed) police there every wee, when for example police in Los Angeles finds a drug dealer's phone with geolocation = USA = little farm in Kansas. (My phone's geolocation was in the middle of the River Thames).