This website contains age-restricted materials including nudity and explicit depictions of sexual activity.
By entering, you affirm that you are at least 18 years of age or the age of majority in the jurisdiction you are accessing the website from and you consent to viewing sexually explicit content.
Maybe the warning could require Apple sign-in to dismiss, but can be hidden at startup? Then make it an industry standard to present the phone when it is powered off.
EDIT: Yes, I know that this is still shitty for most customers.
Yeah, unfortunately that would be up to the average person knowing better than to give out passwords.