A Hand Check Foul in basketball refers to a foul that happens when a player uses his hands to make illegal contact with an opponent.
It is also described as the kind of foul that happens when a player uses his hands to prevent or slow down the movement of a player from another team.
It is also sometimes referred to simply as ‘handchecking’.
In general, this foul is called when a player places both hands on a player from the opposing team, blocking their path.
Hand Checking did not start getting called regularly in the NBA until around the 2004-2005 season.
It is somewhat similar to the Reach-in foul.
Hand Check fouls are penalties in the NCAA and high school basketball in the USA as well.
It carries the same penalties as any other personal foul.
Hand Check Foul Explained: [Hand Check Foul][1]
[1]: https://www.youtube.com/watch?v=VLHqHDCw3JI&t=1s