No. The intention with the electromagnets wasn't really to prevent malicious cheating, just mostly to enforce cooldowns since it's very easy to forget/miss the different color of lights. The games are generally very chaotic and due to user error there are usually a few incorrect touches throughout the game that have to be quickly corrected manually anyways, so enforcing legal moves wouldn't make the experience better.
As for moving multiple pieces at once, the rule I have is only one hand and one piece at a time. This goes a long way towards preventing accidental bumps into other pieces and weird board states where there are multiple pieces in the process of being moved at once.
As for moving multiple pieces at once, the rule I have is only one hand and one piece at a time. This goes a long way towards preventing accidental bumps into other pieces and weird board states where there are multiple pieces in the process of being moved at once.