Let's imagine that in the future we have a way of creating room temperature superconductors that can be used to have electric magnets that can create quantum locks.
So the design is a shield made out of two or more parts. There is the metal shield the person holds. The other half of the shield is a plate, or plates that hover a few centimeters in front of the plate attached to the user using magnetic levitation and are locked in place.
The idea is to use the magnet to create a huge cushion. Any impact on it would be dissipated across the entire magnet and would minimize harm to the user. Hopefully a smaller shield could be used to block small to medium caliber rounds, and a large shield on power armor could block 50 cal or a car.
We can also say that the front of the shield is made of some super material that can take the impact, but I also hope that the softness of the floating shield would help protect it as well.
The question is, would this help disperse the impact, or would a human inside the suit still be turned into paste by heavy gunfire or a large impact?