Will AI take over the world?

From offices to living rooms, devices with human-like characteristics are creeping into our everyday lives.

Many of us interact every day with Siri, Apple's voice-activated digital personal assistant.

It can find information, give directions, send messages and is just one example of how artificial intelligence (AI) is becoming a bigger part of everyday life.

Machines are getting smarter, but experts are divided as to when AI will move on from basic tasks to the scary stuff of science fiction, if it ever will.

But some risks are more immediate as technology increasingly threatens to replace workers in some sectors.