Tina knelt naked in the cage and stared out at the studio. As she did she reflected on the last few weeks, and how completely she had misjudged the new job she had landed.

What she had actually signed up for was a lifestyle. Soon after she had signed up she had been ordered out of the catsuit and given a black PVC mac to replace it, along with a pair of patent leather stiletto heels. The leather collar had been removed. Only to be replaced by a steel one that was even tighter and clicked with an ominous finality as it was closed.

The name 'Girl' had been quickly dropped and both Dave and Mistress called her slave. Once in the mac, the pair had taken her to a piercing studio after Mistress had clipped a leash onto her collar. Each objection Tina had raised had been quashed by one or the other citing, "It's in the contract you have to."

An extremely sore and tender Tina had been led out of the piercers back to the hotel. Tina had handed over her passport and been allowed to ship her other belongings back to her friend Charlotte. After calling Charlotte Tina had her phone confiscated too.

The night had been spent in Mistress's hotel room as Mistress practised ordering her around. Teaching Tina the poses and positions she was supposed to adopt upon command.

The next day they had flown out to the UK. Tina still with nothing to wear but a PVC coat, a steel collar and a pair of five-inch heels. Security had been a nightmare as Mistress claimed not to have a key to Tina's collar. Tina had eventually been taken to a room for a cavity search by a very butch looking security official.

Arriving at Heathrow, once clear of customs and immigration, Dave and Mistress became even more domineering. She was ordered to fetch and carry their luggage and, once they collected the hire car, chauffeur them too. Dave merely entered a destination into the car's sat-nav, and the couple ignored her for the rest of the journey.

Tina had spent the entire drive trying to work out if she could raise the funds to break out of the contract. Unfortunately the value of the plot of land her wrecked home stood upon was not enough and she had no other funds to her name. She was stuck now until the 'modelling' contract was finished.

After four hours on the road. Narrow congested roads, with the traffic on the wrong side, and everyone in an indecent rush. They arrived at what looked like a gothic mansion on a small walled estate.

They were greeted by Sadie and Toyah warmly. Sadie was a cliché dominatrix. Dressed in leather jeans and a satin blouse. Toyah (who Sadie called Toy) wore nothing but latex stockings, gloves and a corset as well as ballet boots and a collar that matched Tina's.

Tina glumly noted Toyah's crew cut hair and insane boots and wondered how long it would be before Mistress enforced both on her.

Toyah had helped Tina unload the luggage and carry it up to the rooms Dave and Mistress would be using for the stay. She then led Tina down to the dungeon and showed her the cell she would be sleeping in. The cell was small and had no bed or bunk. The floor and walls were large granite blocks. The only feature was a small barred window, set high above her head, through which Tina could see nothing but sky and a cold steel door with a peephole accessed from the outside. The only furniture was a bucket to piss in and a thick heavy chain to attach to her collar at night. Thus Tina's life as a slave began.

Each morning she was roused by Toyah. First, she helped her fellow slave make breakfast. Then she was sent to serve Mistress. Mistress most mornings dined in bed while Tina knelt to the side. She then had Tina pleasure her in bed or in the shower depending on mood. Tina then was expected to clean herself and the room before taking the tray back to the kitchen. Tina would then be fed cold porridge before being sent back to the dungeon to model or demonstrate the websites stock.

Obviously, Tina had resisted at first. But a few sound thrashings brought her into line. Then Mistress had gleefully pointed out the clause in the contract that enforced what they were doing to her. Tina had to assume the role of the slave all the time she was on camera. The cameras were then pointed out to her. There was apparently a live stream of the in-house slave available most of the day and all night.

The first five days or so they worked on the still shots for the site. The range of items was huge and it was actually hard work posing and changing from one item to the next continuously through the day.

Today though was going to be the first of the demonstrations. Tina guessed the site was not fully live yet. Doubtless, the 'live' video of her around the mansion would be screened before being streamed to ensure she wasn't trying to summon help.

So Tina watched through the bars trying to guess which items they would be using on her. Privately she was hoping the weekly sessions on the Motorbunny would start soon. There needed to be some upside to being a slave. Though she was becoming jaded enough to wonder if they had scrapped that idea.

Just then the studio lights were turned on and Mistress started talking to the camera.

"Hello, dear customers. Today I'm going to be demonstrating our patented slave marking system. I know many of you like to mark your slaves as your property. Some go as far as branding their livestock, others use tattoos. For those that are not quite as hardcore temporary tattoos or a good old fashioned felt marker suffice.

Then there is the issue of what to place on your slave to ensure others know they are yours, as well as confirm to your slave that they are indeed owned. Also, there is the difficulty in branding safely or finding a tattoo artist you're happy to explain you want a symbol of ownership on you fucktoy.

There have been some slave registration sites that offer barcodes. Unfortunately, the barcodes could not be read, as they are near impossible to tattoo, and the sites disappeared after a few years leaving meaningless tattoo's on slaves.

Our system, we like to think, overcomes many of the failings of the procedures I have mentioned. First, we have started our own register. It is free of charge at it's most basic level. Though for a nominal charge you can include pictures and a profile of your slave should you wish to sell it. I'd like to say here and now the servers for this facility have been prepaid for the next two hundred years.
Next, we provide a free app for both Android and Apple phones that can scan the marks provided, as well as work on facial recognition if the owner scans their slaves' facial data into the site.
Finally, we provide a marking system, as simple as a temporary tattoo, that you can apply to your slave yourself. Saving you the hassle of finding a tattoo artist or mucking about with saucers of water and sponges."

Mistress started walking towards Tina's cage, "So I'm going to demonstrate how our system works by entering in our in house slave slut here. If you could just bear with me while I install her on the bench."

Mistress Sin opened the cage and Tina dutifully crawled out. It had been made painfully clear to her that any disobedience during filming would make the application of the piercings she now wore seem like a tickling session.

A leash was clipped on and she was led crawling over to a gurney in front of the camera. Tina was instructed to climb aboard and was then promptly secured with fetters at wrists and ankles.

"Okay so now we have my little minge munching whore strapped in place we'll put her facial data in first. All you need to do is log in to your account and then after a couple of buttons, like so, just show the camera on your phone your slave." Mistress started panning the phone around Tina's head. "It'll give you prompts as to which sides of the face it wants to see and ping like that when finished."

Mistress put the phone down and picked up some pieces of shiny paper. "So how to apply our patented marks. After registering your slave you can order our kit. It'll come with two bottles of specialist dye and the stencils required to mark your slave. You pick which sizes and how many when you order. I'm going to show you how to apply three now. Two will be black and one will be in the ultraviolet sensitive ink that you will need a black light to reveal. So first you need to apply your stencils to the skin."

Mistress peeled off the backing on one of the stencils and stuck the item on her pubic mound. She then took another longer thinner one and applied it to Tina's inner left forearm. Finally, she took the largest one and stuck that to the outside of her left thigh.

"Now you'll need to ensure you only get the dye on the stencils so we advise you mask off the rest of your slaves' flesh using food wrap or as we say here in the UK; clingfilm. Also, wear protective gloves and wear goggles too." Mistress dutifully did as she advised and wrapped Tina until she looked like a victim from the TV show Dexter. Finally cutting windows in the clear plastic so she once again had access to the three stencils.

"Finally, if like mine, your slave is a squealer, you may want to gag it for the benefit of the neighbours." Mistress rammed in a large red ballgag and buckled the strap up extremely tight, and popped a pair of safety goggles on her too.

"Good, now we are ready for the fun part. You'll need two spray bottles, you can order them too as extras but you can pick them up pretty cheap at any DIY store. You put the dye in one bottle and the other you put tap water in. As a safety tip if you spill dye anywhere you don't want it, pour tap water on it instantly to neutralise it."

Mistress picked up a spray bottle with a blue cross on it.

"This bottle contains the ultraviolet dye," Mistress sprayed the clear liquid mist, onto Tina's forearm. Mistress then picked up a bottle with a black cross on it and misted her mons and thigh.

"You now want to set a timer for ten minutes." Mistress twisted a simple egg timer. "Then watch your slave squirm."

Tina looked down herself as much as the clingfilm allowed to see if the dye was visible. There was nothing to see though but soon there was something to feel. It started as a tingle but quickly progressed to a burn. Tina moaned into her gag in fear. It felt like the dye was an acid. The burn rapidly escalated to agonising and Tina bucked and thrashed against her bonds. Wildy screaming into her gag she noted that her Mistress was laughing at her predicament.

"Calm yourself, you stupid strumpet. It's doing you no harm it just stings a little is all." Tina glared daggers at the dominatrix, certain the woman had never experienced the agony aflame in her mons at that moment.

Abruptly the egg timer rang out and Mistress picked up the third bottle. Three quick sprays miraculously quenched the invisible flames and reduced the burn to a residual tingle. Mistress produced a large pair of shears and deftly cut away the confining plastic wrap before ripping away the stencils with no regard for the small hairs the took with them. Tina looked down to see crisp black barcodes on her mons and thigh.

"As you can now see indelibly marked in my slaves' flesh is the barcode for her registration number. I can assure you that these barcodes will remain sharp clear and scannable for the remainder of the slaves' life. Anyone with our app can scan them to ascertain her identity, current owner and value should they be considering purchasing her." Mistress picked up an inspection lamp fitted with a blacklight bulb and held it over Tina's arm. The same barcode fluoresced in white where before it had been invisible. "This enables you to mark areas that you don't want the code to be normally seen. You could for instance barcode your slave's forehead or cheeks. We can also supply logos and icons such as the BDSM triskelion if you wish. So as you can see this is a much better way, in only ten minutes, of permanently marking your slave with an ident that will enable anyone on the scene to identify it in a jiffy"

Tina groaned into her gag as she looked down. The only word that had registered echoed in her mind. Permenantly.