A technology has been developed using which the scan of the brain can be made and interpreted to know the intentions of a person. The experiments are still in its infancy stage. The scan is just like the MRI scan.
An experiment was carried out on a group of volunteers who when subjected to the test , the results of if they were going to perform an addition or a subtraction was predicted correctly 70% of the time.
According to the scientists there are patterns in the areas of brain which gets lighted according to the type of thoughts in the mind.