RINGO on the Liverpool Telescope has now measured the optical polarization of GRB 060418 ( where a 2 \sigma upper limit of P < 8 % was determined ) and GRB 090102 ( when a detection of P~ { } 10 \pm 1 % was made ) .
We discuss the implications of these observations for the various competing models of GRB jet magnetization and describe a possible unified model that can explain both measurements .