Laura
It would be easier to accept.
Angelina
Good idea.I would maybe suggest something similar to my daughter(if I've one)when she would start dating.
It makes masturbating,and so,relieving the urges,still possible,but can help her to manage the asking of her boyfriend,if he would insists(same if she would have a girlfriend);no need to explain why to wait,she woud be belted and would not have the keys,so,she couldn't.
Of course,if,after some time,she would be ready for this,we would have a talk and I would let her go to the next date with one of the keys in her purse(and a condom).
However,if she would want to be locked completely,with a chastity belt,we would have a a talk about it,and I would accept if she's sure she wants this.But we would have to make an agrement about it to not ask me to take it on and off depending on her urges.Maybe a minimum time of wearing,or not wearing it again for some time after it is taken off...But it is very unlikely she would ask me to be completely locked.
And,in both cases,only if she would agree,of course.