There is no ignition switch, that's what the card does.
Contary to popular rumour new ones can be obtained but the only place I know of that can get them is Bat Motorcycles in the UK. They must have a contact at Honda because the card on it's own is listed as no longer available.
The alternative would be to get a whole new or 2nd hand PGM-IV and card (the card has to match the PGM) or switch all the electrics and steering lock from an earlier model.
_________________
Please do not PM me technical questions, if you can't find it on the Forum start a thread