Sex workers in Amsterdam will have a hard time finding work if two New Zealand academics' vision of the future comes true.

"In 2050, Amsterdam's red light district will all be about android prostitutes who are clean of sexual transmitted infections, not smuggled in from Eastern Europe and forced into slavery, the city council will have direct control over android sex workers controlling prices, hours of operations and sexual services," write futurologist Ian Yeoman and sexologist Michelle Mars.

The duo's paper, Robots, Men And Sex Tourism, published in the journal Futures, centres on an imaginary future sex club in Amsterdam called Yub-Yum.

It posits that sex tourists will dish out big cash for all-inclusive robot sex romps.

This will be a big win for Amsterdam, they say, as the city will keep drawing huge swaths of randy tourists willing to empty their pockets, but avoid all the downsides, like drugs, violence and underage exploitation.

The sex-bots will even be made from bacteria resistant fibre, the Victoria University of Wellington academics predict.

Mars is a sex expert who discusses topics like designer vaginas.

Yeoman is a professor of tourism management and author of the book Tomorrow's Tourist, in which he predicts that by 2030 "China will be the world's largest tourism destination, holidays in outer space will be the ultimate luxury experience, extreme Swedish ironing will be an Olympic sport, embedded technologies will be the norm in future tourists and skiing in the Alps will be no more."