  We propose to access the gluon polarization $\Delta G$ by measuring the cross
section spin-asymmetry in semi-inclusive polarized lepton -- nucleon
scattering. The photon-gluon fusion sub-process will be tagged by detecting
high-$p_T$ correlated hadron pairs in the forward hemisphere. Selecting
oppositely charged kaon pairs will allow to suppress the background coming from
gluon radiation.
