It is seen as the tech industry event of the year, and a window into the inventions that will change our lives in the years ahead.
But the start of the CES conference in Las Vegas was dominated by a robot that ferries toilet paper, a row over the appearance of Donald Trump’s daughter Ivanka, and a decline in reported attendee numbers.
The Consumer Technology Association (CTA), the trade body that runs the show, said it expected more than 170,000 attendees and 4,400 exhibitors, a decline from the 180,000 and 4,500 it had quoted last year.
A spokesman for the CTA said the show’s size would “remain roughly the same as last year” and that it would provide audited numbers after the week-long event.
The decline is partly due to fewer Chinese companies attending amid trade tensions with the US.
Ms Trump will speak at the show later today. Her attendance has been controversial because the show has previously been lambasted for under-representing female tech executives with established careers. CTA chief Gary Shapiro has defended the decision, saying her talk will focus on job creation.
Here are some of the best and most bizarre inventions making headlines from this year’s show.