Licensing to control Irresponsible sexual behaviour

As one of the number of factors in society that will collude in reducing the abortion rate without making abortion illegal, I have suggested, without any detail whatsoever, that some kind of licensing/registering regulatory system is a likely trend, and one that as constituents we can influence its direction in a positive way. I will refer to marriage licenses, driving licenses, "blue" card for working with children, Apprehended violence orders, and student cards. The license I am proposing, I would envisage being just another card to carry like these. It would be called something like a dating license to start with. You wouldn't necessarily have to pass any tests or anything, but just have your details registered and police checked (as with the blue card). I would consider it an important form of ID for adolescents and young adults (as would a student card). It would be required to be shown to, say, go to a movie, restaurant, or disco in certain situations. Where it would shine would be with certain infringements. Convictions on date rape (or any kind) would disqualify you from having a date license. Lesser infringements such as inappropriate behaviour as registered by a complainant or by a third party would be registered as infringements (as speeding, parking infringements are) and wouldn't necessarily disqualify your license until you got a number of them. Complainants that make a number of complaints against different people may also be cautioned for vexatious behaviour. Teenage (or any unwanted) pregnancies caused or had can then be easily factored in the equation, and used as evidence of irresponsible behaviour as far as the dating license is concerned. I see this as primarily reducing the incidence of date rape and other hard to prove indiscretions/crimes, such as statutory rape. The reduced incidence of unwanted pregnancies will just be a side effect.