Key tech trends at world's biggest consumer electronics show

Sleep-inducing mattresses, a car that senses its driver's mood and a smart shoe that can lace itself are all on display in Las Vegas today

The dashboard of the Faraday Future FF91 prototype electric crossover vehicle. Pic: Getty

The annual Consumer Electronics Show will begin showcasing tech wares today at Las Vegas.

The world's largestannual consumer technology trade show runs until Sunday.

It will feature 3,800 exhibitors showing off their latest products and services to more than 165,000 attendees.

As the pace of technological development accelerates, watch out for the following key trends at the show:

-Personal digital assistants

Amazon's Alexa, Microsoft's Cortana and the Google Assistant arejockeying for top spot in the personal digital assistant market.