“According to market research firm Tractica, the use of virtual digital assistants (VDAs) is going to increase sharply over the next few years. As our chart illustrates, the number of people using digital assistants is projected to increase from 504 million this year to 1.8 billion by 2021. While intelligent voice-recognition technology is currently most commonly known from smartphone-based assistants such as Siri and Google Now, Tractica expects similar solutions to be used in many more devices going forward.”

Infographic: Digital Assistants - Always at Your Service
https://www.statista.com/chart/5621/users-of-virtual-digital-assistants/
via Instapaper