YES there is a small ban time for jumping around the globe to fast. It still lets you log in but you cant hit any poke stops and all the pokemon instantly run away. but the ban only last 30 mins. Nintendo knows people are playing from home. if they truly had a problem with it. they would be suing the pants off all the companies that turned it into a pc version.
just make sensible jumps and you will be fine. ex of sensible jump is - you gps location changed to 300-500km after 8 hours (doable and you wont be banned) , in-sensible jump - 4000km in 1 hr (are you really kidding me) but as o.p said niantic (pokemon go creators) are taking this very seriously and most of the time you will only get a temp ban . Very few users have received permanent ban
