In practice, the case isn't much different in dimensions to a standard protective iPhone case, if a little chunkier along the base.

ENGADGET: Canopy Sensus case adds backscreen and side touch to iPhones (hands-on)

On the other hand, the good news for physicists is that, if the theory is correct, the loops formed by these extra dimensions, unlike those of standard string theory, will be relatively large.

ECONOMIST: A matter of gravity