Blood Control is the process of generating a hypnotic signal that controls all persons of a certaint blood type.
Blood Control is similar to Brain Control.
On Christmas Day in 2006, the Sycorax race used blood control to hold everyone of A+ Blood. The hypnotised people head for the roofs of the building of the world and the Sycorax threatened to press a big button and they would jump.
The Blood Control was a hoax, but Blood Control is possibly.