  The entropic gravity scenario recently proposed by Erik Verlinde reproduced
the Newton's law of purely classical gravity yet the key assumptions of this
approach all have quantum mechanical origins. This is atypical for emergent
phenomena in physics, where the underlying, more fundamental physics often
reveals itself as corrections to the leading classical behavior. So one
naturally wonders: where is hbar hiding in entropic gravity? To address this
question, we first revisit the idea of holographic screen as well as entropy
and its variation law in order to obtain a self-consistent approach to the
problem. Next we argue that when dealing with quantum gravity issues the
generalized uncertainty principle (GUP) should be the more appropriate
foundation. Indeed based on GUP it has been demonstrated that the black hole
Bekenstein entropy area law must be modified not only in the strong but also in
the weak gravity regime. In the weak gravity limit, such a GUP modified entropy
exhibits a logarithmic correction term. When applying it to the entropic
interpretation, we demonstrate that the resulting gravity force law does
include sub-leading order correction terms that depend on hbar. Such deviation
from the classical Newton's law may serve as a probe to the validity of the
entropic gravity postulate.
