For this exercise need help his partner.
Put an apple or any other three-dimensional objects on a table.
Establish contact with the subject of his hand.
Note the setting on this subject.
Close your eyes or turn away. Let teammate shift the object to another location on the desktop. Try to find this object on the table of saved configuration to it. Do not touch the object, but only find it in the space on the sensations in your hand.
Found? Look at the object. You correctly identify the location? The item must be strictly under the palm.
Repeat this, since the establishment of a thin contact until the result of attempts is not equal to 100%.