  We establish a connection between 4-rebits (real qubits) and the Nambu-Goto
action with target `spacetime' of four time and four space dimensions
((4+4)-dimensions)). We motivate the subject with three observations. The first
one is that a 4-rebit contains exactly the same number of degree of freedom as
a complex 3-qubit and therefore 4-rebits are special in the sense of division
algebras. Secondly, the (4+4)-dimensions can be splitted as (4+4)=(3+1)+(1+3)
and therefore they are connected with an ordinary (1+3)-spacetime and with
changed signature (3+1)-spacetime. Finally, we show how geometric aspects of
4-rebits can be related to the chirotope concept of oriented matroid theory.
