In one embodiment, a limited play optical storage medium for data
comprises: a reflective layer, a control portion comprising an optically
transparent polymeric resin and a light absorbing material, wherein the
control portion has a light transmission of greater than or equal to
about 70% at 650 nm, a curing index of greater than or equal to about 0.1
and a filtration index of greater than or equal to about 2.5, and wherein
the light absorbing material has a minimum extinction coefficient
(measured in CH.sub.2Cl.sub.2 solution) at 600 nm of greater than or
equal to 1,500 mol.sup.-1cm.sup.-1L, a maximum extinction coefficient
(measured in CH.sub.2Cl.sub.2 solution) at 650 nm of less than about
1,000 mol.sup.-1cm.sup.-1L, a ratio of extinction coefficient at 650 nm
to 600 nm less than about 0.1, and a reactive layer disposed between the
reflective layer and the control portion, wherein the reactive layer is
designed to limit the time during which data on the medium (disposed on a
side of the reactive layer opposite the control portion), can be accessed
after exposure to oxygen.