Technology giants Google, Apple and Facebook have been accused of facilitating an online slavery market.
An undercover investigation by BBC News Arabic found smartphone apps in Kuwait where potential buyers can scroll through the details of thousands of women available for domestic service.
The women can be 'bought' for as little as £3,000.
A BBC undercover investigation found an online market where people in Kuwait could buy domestic servants for as little as £3,000. The team were advised to keep their maid's passport and take away her phone while denying her any time off
UN special repporteur on modern slavery Urmila Bhoola said the tech companies should be held accountable as their services are facilitating this trade
UN special rapporteur on modern slavery Urmila Bhoola told the BBC: 'What they are doing is promoting an online slave market.
'If Google, Apple, Facebook or any other companies are hosting apps like these, they have to be held accountable.'
The investigation found that one market operates on Instagram, which is owned by Facebook. It is reported that sales are conducted through private messages.
The tech giants told the BBC they are working with app developers to stop the illegal activity.
They also suggest selling people online is against their terms and conditions.
However, the BBC sent a couple under cover claiming they were newly arrived in Kuwait and were seeking domestic servants.
They visited one site where women were filtered by race - with some people worth more than others.
One advert claimed an African worker was 'clean and smiley', while a second warned the Nepalese person for sale 'dares to ask for a day off'.
The undercover team met one 16-year-old girl who had been trafficked from Guinea
Domestic workers are advertised on online market places with their photograph and price
Some of the adverts are