Internet of things diversified usage of Internet of things. Governmental regulation is argued by some to be necessary to secure IoT devices and the wider Internet – as market incentives to secure IoT devices is insufficient. IoT systems are typically controlled by event-driven smart apps that take as input either sensed data, user inputs, or other external triggers (from the Internet) and command one or more actuators towards providing different forms of automation. Examples of sensors include smoke detectors, motion sensors, and contact sensors. Examples of actuators include smart locks, smart power outlets, and door controls. Popular control platforms on which third-party developers
Cats and the Internet has more than 100 million views per month and has "created a whole new form of internet speak". In 2009, the humour site Urlesque deemed September 9 "A Day Without Cats Online", and had over 40 blogs and websites agree to "[ban] cats from their pages for at least 24 hours". , there are over 2 million cat videos on YouTube alone, and cats are one of the most searched keywords on the internet. CNN estimated that in 2015 there could be around 6.5 billion cat pictures on the internet. The internet has been described as a "virtual cat park,