Make uploaded photos get vetted and categorised as NSFW or not at the time of upload. If a user with NSFW pics tries to send it to someone who opted for NSFW - NOT AT FIRST, then the sender gets an alert that certain photos cannot be sent and they have to ask the recipient if it is okay. That is a way to enforce consent. It is unwanted holes and dicks in my face every time I open this app that makes me label it toxic. I love me a hot hook up but it's the desperate unwanted pics that leaves a toxic taste in the mouth of many of us. Yes this will be an additional burden for the army of "censors" you use but also an opportunity for having one photo portal and they get sorted there by Grindr as nude or not.