“The young do not know enough to be prudent, and therefore they attempt the impossible -- and achieve it, generation after generation.” -- Pearl S. Buck

It is not impossible to prevent or limit.

There are many projects working on software and technologies to do just that. Some are:

What you're saying
RedPhone and TextSecure: https://whispersystems.org/
Wickr: https://www.mywickr.com/en/index.php/
Parley.co: http://parley.co/
Silent Circle: https://silentcircle.com/
Seecrypt: https://www.seecrypt.com/

Who you're saying it to / who or where you are
Tor: https://www.torproject.org/

Both (for the most part)
LEAP: https://leap.se/ (Full disclosure: I am a developer on this project)

to name a few :)

Admission: I am not completely familiar with the details of many of these projects

I don't have a reference on hand, and the sad state of my mobile device makes it too time consuming to dig one up, but most studies agree that the vast majority of sexual assault crimes are committed by someone the victim knows, with a non-trivial percent of assailants being male family members.

I realize you were forming an example for a more generalized argument, but in the case of Constitutionally questionable social structures, being accurate is of paramount importance.

There is an enormous range of import for input development. Computing has evolved and changed with remarkable breadth since i picked up my first VIC-20, which was outdated when i got my hands on it (the days of MS-DOS and the Windows 3.1 transition). Now we carry GPS internet communications devices in our pocket and ask them where we are, when's the bus coming, and what did the stock market do in a country halfway around the world 20 minutes ago. In terms of this particular innovative direction, home entertainment computers are becoming normal for audio, video, and gaming. A large wall display and this kind of device as an interface is not a surprising or unusual direction for exploring the possible best-use ways to interact and control such a system. That could even include home automation, or anything. Input development and innovation actually have a huge impact on what we see our computers as capable of doing for us and influence how we think about the ways in which we can interact with information and communication.

Look for an "Unattended" copy of XP Pro Corporate...As long as you're plugged into ethernet (as opposed to hoping your laptop wireless card will automagically work from the cd...linux for that), You just have to choose your install partition, walk away, come back later and name the machine and set a password, walk away, then come back later. Of course, the only user is "Administrator" and has the password you set, but you can add a user or change your username if you wish (changing XP usernames and trying to change the name of your...."home"...directory is a process....add another user and disable the Administrator log in, except of course for safe mode.).