Immunogenic compositions and methods for eliciting an immune response against S. The trigger blocking device holds a blocking shaft behind the trigger, the shaft being capable of sliding longitudinally or axially into two separate positions, one position where the shaft blocks the operation of the trigger and the other position where a recessed area in the shaft forms a trigger channel, when moved into position, allows the operation of the trigger. The remote control is adapted to receive the first data from the target device and select a command key indicia from the set of command key indicias that has a function identifier that corresponds to the function specified by the first data.