  In this paper, we consider biquandle colorings for knotoids in $\mathbb{R}^2$
or $S^2$ and we construct several coloring invariants for knotoids derived as
enhancements of the biquandle counting invariant. We first enhance the
biquandle counting invariant by using a matrix constructed by utilizing the
orientation a knotoid diagram is endowed with. We generalize Niebrzydowski's
biquandle longitude invariant for virtual long knots to obtain new invariants
for knotoids. We show that biquandle invariants can detect mirror images of
knotoids and show that our enhancements are proper in the sense that knotoids
which are not distinguished by the counting invariant are distinguished by our
enhancements.
