Explaining conditions.

The drive to John's home was done in comfortable silence, as neither person spoke. The only sound was the muted rumble of the engine and the high-speed shredding of guitars coming from his cd player. His usually organized mind was going about as fast as the music, trying to process the sudden change of their day. As he checked his side mirror, he spotted Alex staring ahead of herself, quietly singing along with the lyrics of the song, having heard this band many times before now.

What was going through her mind, he thought and was she really serious. And for that matter, was he? Was he seriously contemplating putting a chastity belt on Alexandra fucking Daddario? The thought alone was basically every healthy man's wet dream, and John certainly was healthy in that regard. The sheer amount of control he would have over her sex-drive was turning him on, and he could already imagine Alex sitting on her knees, desperation in those intelligent eyes, begging him to let her cum.

'So how does that thing work anyway?'

Alexandra's sudden question broke his train of thought, and it took him a few seconds to process what she said.

'It creates a connection with your body, using it to create a profile that allows it to use the right action.'

'What kind of actions? You make it sound like it has an AI included.'

'Not an AI, no. But the programming allows for a limited form of control and decision making. It can reward the wearer if they did something good, or punish them if not. Supposedly, of course. It's still untested. And before you ask; no, I'm not going to tell you what kind of punishments or rewards it can give, that would be spoiling the fun.'

Alexandra gave a huff of disappointment but said nothing otherwise. They drove in silence for a few more minutes, and John's thoughts began to drift back to what he was about to do. An image of a naked Alexandra sucking his cock appeared, and he was not entirely against the idea anymore. He had seen that shapely ass, and fucking it to the sound of her **** pleas was becoming more and more appealing.

'So if you really want to do this,' John began. 'Then I want you to realise that it is not going to be a quick afternoon test. You have to wear it for a prolonged period in order to get the best test results.'

Alex gave him a long scrutinizing look before she responded.

'How long are we talking about here? And will it affect my day to day business? Or my job?'

'As long as you can manage. We usually run tests for months or even years, but I won't ask you to go that long. And it should not affect your day to day business or your job. Much.' John saw Alexandra raise an eyebrow at that last part, and he couldn't suppress a smile. 'You'll see soon enough. We're here anyway.'

And indeed, John pulled the car into his driveway, and stopped in front of his house. It was a sizable house, bordering on mansion size, but just a tad too small to be considered one. It had two floors and plenty of rooms that he had furnished for things like work, exercise, guest rooms, or whatever he wanted to use it for. It was decorated in a stylish, but practical way, showing that he cared about looks, but not to the point of sacrificing functionality.

'My study is upstairs, you've seen it before, go make yourself comfortable, and will get the device.'

Alexandra walked upstairs, and entered the room she knew was John's study. It was a simply decorated room, allowing him to focus on his work, and its furniture was a desk with an elaborate computer setup and several tables on which a variety of tools were strewn out. She sat down in one of the chairs and waited for John to return. He did so a short while later, and he carried what looked like a metal plate with several thin leather straps attached to it, and a USB drive. He sat down behind his desk, and after booting up his computer, handed the object to Alexandra.

She took it and turned it around to get a good look at it. It was, as she saw, a metal plate, though extraordinarily light. It was roughly shaped in the same form as the front side of a female's underwear, and she assumed this would cover the wearer's pussy, blocking all access. One side was polished smoothly, and as she turned it in her hand, she saw a subtle pattern of electronic circuitry shimmer in the light. There was a strange metal rod sticking out of the polished side, and its location and shape told her exactly where that would go when the device is worn. She took her time inspecting every bit of the device and had to admit that it looked quite well made. This was not a sloppy or crude design like she saw in musea, but something that was designed to be used for a prolonged period of time. She looked up at John and saw that he had the USB stick inserted into his keyboard, and was rapidly typing away while looking intently at one of his screens. His other screen was flashing through windows as the information on the stick was being transferred, and try as she might, it went to fast, and far too technical for her to follow.

After about ten minutes, John leaned back in his chair, and looked at Alexandra. He observed how she was inspecting the device he created and noted how her eyes shone with enthusiasm and interest. The longer he studied her behaviour, the more it became clear she really wanted to help him. Like, REALLY really. He got the impression this was more then her helping a friend. A friend she knew for just over two months. It made no sense to his rational mind. Alex, noticing his intense stare, raised the device.

'So how does this function exactly, cause it doesn't look like it can keep much out, let alone a determined hand or object.'

John Shifted into full work persona for this, and began to explain how the belt worked.

'It's being kept in place by the straps, but the edges of the plate have small needles that pierce the skin. Those will emit a subtle electric current to stimulate skin growth, and that will create a thin, but seamless connection. It takes about a day to fully settle, but once done, the edge of the plate will be inaccessible from the outside. Should an emergency situation occur, the device can send a short electric burst that will immediately burn the new skin, and severing the connection, so you can remove it.'

Alexandra looked slightly confused when he mentioned that last part. so he continued on, wanting to make everything as clear as possible.

'The device keeps a close eye on your biosignature, or your health if you want. Should it's values spike to dangerous levels, such as **** stress, or physical trauma, it can decide it is in your best interest if the device becomes removable. For that same reason, it uses its link to the keyholders biosignature, that's going to be me, by the way, to keep track of my health or well being. Should something like that happen to me or let's go with the **** case, and I die, you won't stay locked in the belt without a way out. It keeps track of my bio's by way of the chip I had implanted for company access. '

John pointed to his wrist, where Alexandra knew his watch hid a small scar where the company he worked at had implanted a biochip to monitor employee safety in hazard zones, as well as regulate restricted access.

'So except for those reasons, there is no way for the wearer to remove it? You or I need to be in a dangerous situation, other then that, it won't come off?'

'Oh, as the keyholder, I can release it whenever I want. And you're going to get a severely limited version of the control app I just installed on my phone. In it, you can set a safeword release. So should it become too much, you can use that to get out of it. Mind you though, should the release procedure start, I will get a warning about it, and why. In the same way, would it start from my end, you will be notified of it.'

He saw Alex visibly relax as he explained the conditions, and her face got set in a more determined look. She looked like she was set on going through with it, and the thought became more and more appealing to him with each passing minute. So now was the time to see if she truly was game for testing it. This was the part where he would find out if she was willing to give him absolute control over her sex.

'There is also a way to achieve "partial unlock". That is where the plate retracts partly to allow access to the wearer's sex. There is a condition for it though. Something that the wearer has to do before it opens.'

He noticed he had Alex's complete attention now, and if his eyes didn't betray him, it even looked like her nipples started to poke through the thin fabric of her blouse.

'A certain amount of the keyholders, again, that's me, fluids has to be deposited inside the wearer's body. The clients that requested it wanted her partner to basically eat her out and drink enough of her juices so it would eventually open up. I converted the original program into something with a bit more leeway.'

He saw realisation slowly dawn on Alexandra's face, and she looked at him, then down at the device in her hands, then back at him again.

'So in order to get access to my pussy, I need to get a certain amount of your sperm inside of me?' John nodded. 'But the plate seals of my slit... So I have to suck you off?'

John nodded again. 'And swallow, remember that part, it has to be inside of you. The device can recognize my bio whenever it happens, and make it count. So if you, for example, decide to give someone a blowjob, that would not count towards opening the plate, it would just make that guy extremely lucky. Also, in case you didn't notice, the device does not seal off your ass. You do the math on that one.'

Alexandra was silent the whole time, switching her eyes between John and the device. After a minute of silence, John stood up, and walked towards the door.

'I'm going to get us something to drink, you think this over, and when we're done with that, you can decide.'

As John was making their drinks downstairs, his heart was racing, and he couldn't believe this was happening. He saw that look, he gave her time to think, but he knew it was just a formality. She was going to do it. He was serious about to lock a chastity belt on Alexandra Daddario, putting her orgasms and sex under his control. Five minutes later, he reentered his study, and nearly dropped their mugs. Alex had stripped off her pants and underwear and was sitting in the chair with her legs parted slightly, giving him a perfect view of her shaved pussy.

'I take it you don't need more time to think?'

He sat down and placed the two mugs on his desk. Alex picked on, and after taking a sip, confirmed his suspicion.

'Yes. I've read a few stories about women in chastity belts, and they always got me super excited. So this is a chance I won't miss. Plus, it would be hilarious when all of those guys try and chat me up, hoping for a quick score, not knowing they never had a chance, to begin with.'

John laughed at that. he had often seen how men reacted to her presence, and many a relaxing moment had been ruined by some guy trying to impress her. it would often ruin her mood, and thus their day. This was exactly the kind of humour he had begun to expect from her.

'Okay then. If you are absolutely sure, then put it on. I take it you already figured out where what goes, and the straps can be adjusted in length. Just fiddle with it until it fits comfortably.'

John was then treated to the sight of Alexandra slowly pushing the metal rod into her pussy, and he spotted a faint glistening of moisture as her lips parted around the intrusion. She made a soft moan as she pushed it deeper until the plate rested against her crotch. She sat for a moment, her eyes closed as she took in the feeling before she began to adjust the straps. Eventually, she finished, and she looked at John expectantly. He typed a few short commands and hovered his mouse over the activation button.

'So is everything comfy?' He got a nod from Alex. 'Okay, the rod will change in size over time. It will shrink until you can barely notice it. It might be a bit uncomfortable right now, but give it an hour or so, and it should already have adjusted itself.'

He reached for the mouse, and with a silent look, asked her one last time if she was sure. Her grey eyes met his and after a moment of silence, moved her head to answer him.