The invention concerns a method for verifying television receiver sets
with access control and a corresponding receiver set. The invention is
characterized in that a broadcaster performs parametered calculations,
for example through the subscriptions and the characteristics of the
receiver sets. The results of said calculations are transmitted to the
receiver set which store them. In order to verify a receiver, the
broadcaster transmits thereto the parameter(s) used, the receiver
performs the calculation and compares the result it obtains with that
which it has stored. In case of non-conformity, the receiver set modifies
its operating conditions. The invention is applicable to television with
access control.