https://www.thinkuknow.co.uk/parents/articles/what-is-the-internet-of-things-iot/?utm_source=Thinkuknow&utm_campaign=a2f3bcc3b7-EMAIL_TUK_APRIL_2019&utm_medium=email&utm_term=0_0b54505554-a2f3bcc3b7-64734742