I think it’s a really good scheme.
Last time I went for a sexual health check up, I went to the loo to give my pee sample, and there was a set of stickers on back of the door - it said if you needed to speak to the nurse without your partner present, put one of these stickers on your sample pot and they’d get your partner out of the room so you could talk in confidence.
Any ideas like this to help tackle violence against women can only be good things. It’s all about awareness, providing the opportunity for women to safely ask for help, and society in general being more willing to provide it as well.