Positive Feedback Porn

"I'm going to put in a request in for technical assistance," Dr. Stone said, pulling a computer tablet from her desk drawer and tapping away at it. "I have an associate who does rapid-prototyping. Not as smart as your husband, of course, but very technical and discreet."

"Okay," Sue Storm said, hands in fists on her knees, butt on the edge of the chair. She looked at the tea pot, gauged her current bladder level, and decided another cup would be half a cup too much. "To do what, exactly?"

Dr. Stone flashed a smile, glancing up from her work.

"Positive feedback. Your little invisibility problem happens because you're embarrassed. To overcome that, you need positive reinforcement, some way to encourage you to stay visible in the appropriate situation," the psychiatrist said. "If necessary, I can teach you some meditation techniques, but I think you might benefit more initially from some assistance and...handling things on your own."

Sue Storm wasn't entirely sure what the doctor meant about that, but the other woman's smile was positively wicked.

The package arrived by courier that night. Sue Storm opened it up in the privacy of her bedroom, after the children had gone to bed. An invisible X-acto knife cut through tape and layers of foam wrapping. What emerged looked like a computer tablet, one larger and thinner than the one Dr. Stone had used. At the top, someone had placed a lens the size of a half-dollar. And wrapped separately in the packaging was a small, U-shaped blue device of sleek medical-grade silicone. Like a large clip—except there was a small pamphlet with instructions, and Sue blushed as she saw where it was supposed to clip.

The tablet booted up in her hands. Dr. Stone appeared on the screen.

"Hello, Sue! This is a recording. Your little positive reinforcement device. The toy slips inside you and nestles against your clit. Once it activates, the tablet plays some pornography. The lens above shines a little laser. As long as you're visible, the toy vibrates and the porn plays. Go invisible, and everything stops. Simple, right? Your mission tonight is to masturbate for ten minutes. See if you can stay visible the entire time!"

Sue stared at the tablet, whose screen now showed an array of thumbnails of pornographic videos. She stared at the small blue sex toy in her hand. This was...either genius, or insane.

There was only one way to find out.

After all, it was only ten minutes.