Dream Bondage Device - Chastity Alarm - Evolved

AUTHOR'S NOTE (5/22/16 update): After digging through some old posts I realized this is the 2nd time I had come up with something along these lines.  The original was from August, 2010 and involved an imagined modification to a CB-2000/3000/6000 type device but with a different type of mechanism. 

It's been a long time since I wrote about one of these... looking like upwards of 5 years.

For those who aren't familiar with this type of post, occasionally I have some pretty whacked out and over the top Femdom dreams where non-existent-in-reality bondage devices end up surfacing and I end up writing about them.  I think my personal favorite of them was the Venus Ball Trap.
More info on that can be found here:
Description
Piss poor drawing of it

Several different versions of a chastity alarm has shown up in my dreams. The first and most primitive version is also the most realistic in the likelihood that "someone could really make that."

The idea is that a standard ring and cage style chastity device would have a levered plate running along the top/front of the cage portion.  If a sub would try to get erect, it would depress the plate and with enough force, the shift in the plate's position would trigger a bell to ring, letting the Domme know that the sub was aroused and attempting an erection.

This has lots of potential uses, ranging from maintaining sexual discipline in public for fear of drawing attention to giving a Domme an easy barometer for how much a sub is enjoying a certain activity to enacting an impossible challenge of "don't ring the bell, or else..."

There has also been a high tech (sci-fi) version of this to appear in my screwed up brain.  This version incorporates a pressure sensor inside the front of the tube of a full-metal, around the waist style chastity belt.  The sensor could then track the intensity of a sub's attempted erection and feed that data to a computer screen, phone app, etc.

I have dreamed of several different versions of the high-tech belt, and depending upon the details of the dream, many additional options were also included (it doesn't make sense to install a sensor and nothing else does it?).  On the more practical side of things, the options included a GPS tracking chip, heart-rate monitor, and remote activated punishment shock.  Still practical, although quite extreme (this is why I scare myself), was in one dream the belt included some surgical modifications that allowed for feeding and bodily waste to be taken care of via the belt by attaching food and waste containers to it. If an enslaved male doesn't need time to eat or use the restroom, they can be that much more productive.  This included the added "bonus" of allowing a sub to be gagged and plugged indefinitely.   

This sort of device would probably require recharging and the dreams never covered that, but when I thought about it, a line from the "mantronics" fantasy device that I read long ago popped into my head and it seemed perfect:  "A generous 6 foot cord is included for charging."  Although in this dream the subs were kept in tiny cells, so being limited by cord length wouldn't have mattered. 

An additional use that popped up later was the use of the erection sensor to create a sexual profile for a man.  If they were restrained and forced to watch images or scenes of varying nature (A Clockwork Orange sort of deal but probably on a head mounted display), a recording of what turned him on and by how much could be crated, and perfected if the system were to intelligently adjust its image feeds to create a complete profile.  In the dream this was used as a method to locate submissives out of a group of men to route them into a different training program.