  In this talk, I introduce recently proposed method for measuring the photon
polarization in $B\to K_{\rm res}\gamma$. It is also shown that anomalous
right-handed top couplings can severely affect the photon polarization without
spoiling the well measured branching ratio of $B\to X_s\gamma$. Estimated
number of $B$ mesons needed for measuring the photon polarization is already
within the reach of current $B$ factories.
