Instead what is possible to do, even if not entirely wise: is to procure their phones and computers so that they cannot use this medium.  It is entirely possible to restrict their access; or [limit them to a phone that is only a phone] somewhat, even though they can still use someone else’s to do the same thing. The young will make mistakes, but it is also true the teenage years are when most will find someone to marry if that is what they truly want: have to be “free” to do that.  Pictures are not much different than nudity in magazines, movies, and tv.  The failures of the young in this matter are a composite drawing of what their parents, or society have done.  Like alcohol consumption; you can tell them no/ but when they get out into the world, they will decide for themselves; as life requires it of us all.  Consequently, to make it impossible for the young to be prepared by restricting everything/ IS ASKING for tragedy.  Preparation is learning.  Learning is in large part doing/ as with alcohol:   if you learn how much it will affect you, IN A SAFE environment/ then you are less likely to be harmed if you choose it.  As with pictures on the web or phone; if you learn what can “follow you for life”/ and understand:   “If you don’t die/ tomorrow will come”.  The reality of making decisions with that in mind, will cause a different decision to be made.  The human body is a “work of art”/ beyond our ability to truly comprehend it in truth.  It is unwise and unfair to belittle that, or make light of the fact it is precious and needs protection in this world we live in.
What is wise understands: you cannot buy someone else for life, or happiness, or hope with a body!  You can only buy sex, and sex without honesty (I believe in you, as a person who desires my life/ not, just my body), sex without honor (even though none see/ or even if all would see: I still give my best to you, for life), sex without respect (is a plain tragedy, without even friendship involved; its just lust).  The body grants nothing of life, unless shared honestly, with honor and respect.  It is however sometimes true; that people become depressed and turn to simply the consequence of being touched.  It is about, “come play with me/ come help me/ come notice me; for I am sad”.  Beware of liars, but understand:   sometimes touching (to the extent you feel safe, and acceptable) is important.  You cannot fix the world with sex/ but you can say, “honestly, I am your friend.”  But there are consequences with that, so beware of  yourself, and what you are willing to commit.