"So what sort of belt are you using these days?" Amy enquired, glancing casually at the man waiting outside the café, rather weighed down with the shopping bags he was holding.
"CB6000? Tickleberry?"
"Oh, I don't keep him in a belt any more." Sabrina replied.
"Ooooh! Have you had him cut?" Amy asked with interest and some relish.
Her friend looked up at her.
"Certainly not. Where would I kick him if there wasn't anything left down there?"
Amy was confused.
"But I thought you didn't allow him to come? Ever?"
"I don't" Sabrina replied. "It's against my house rules and he knows it."
She laughed, then took pity on her bemused friend.
"I'm just teasing you. I had him fitted with a detector. It's a little chip that goes under his skin. It monitors what's going on, and reports it."
"Reports it where?" Amy asked.
"It's a web-based application that I can access from anywhere" her friend replied. "Look."
She pulled out her phone, navigated the screen with her elegant scarlet-tipped finger, then held it up for her friend to see. It displayed some numbers, along with a large green rectangle labelled "flaccid" and various links to other tabs. Sabrina scrolled it down, and showed Amy the field that reported 'Last orgasm: 18th January 2021, 10.54'.
"I can access all of the history at any time" she said, scrolling through some sets of numbers.
"And I've got it set up so that if he does have an orgasm, I get a text message immediately."
"And it updates in real time?" Amy asked, enviously.
"Sure" her friend replied. "BOY!"
The man started in shock, then scurried in past the amused looks from the other tables at his rapid response to the preremptory command.
"Sit down" Sabrina ordered, curtly, and with a worried expression on his face, he arranged the shopping bags on the floor and gingerly lowered himself into his seat.
"I've been telling Amy about our new approach to keeping your chastity" she said. "How there's really nothing to stop you getting...excited any more. Nothing except the thought of my cane."
She leaned over towards him, and gazed into his eyes.
"Nothing except that wicked cane...for a very...naughty...boy..." and her booted foot slowly began to caress his inner leg.
"Do you find it very frustrating?" Amy asked, her eyes wide and sympathetic. "Only -- and here she leaned forwards and smiled sympathetically. "Only I find my man gets so very frustrated in his chastity belt. Especially when I ask him to help me get undressed...." She eased back her top, to expose a lacy bra strap on her shoulder. "....or to massage me with oil" she breathed.
"And you spank him too, don't you?" Sabrina asked, innocently.
"Oh yes" Amy breathed heavily, her eyes widening. "Yes, I spank him vigorously! I get my hairbrush, and I put him across my thighs..." and she swivelled in her chair -- "these thighs" -- and she took hold of the man's unresisting face, and directed attention down to where her thighs were visible between the top of her leather boots and the hem of her tight skirt.
Sabrina picked up the phone and giggled. "See?" she said, holding it out to her friend.
The rectangle was now bright red and contained the words "Fully erect". In fact, the technology wasn't really necessary for that, as the swelling was very clearly visible in the trousered lap in front of them.
Sabrina gently laid her hand on top of the straining cloth. Amy noted with interest that several numbers on the phone changed instantly, and a small exclamation mark began to flash.
Sabrina patted the mound gently and smiled.
"A very excited boy. Aren't we? Right here." She patted again.
"Yes, Mistress Sabrina" the unhappy man replied, hoarsely.