Siri

Siri is an electronic digital assistant developed by Apple Inc. for it's iPhone s. It was first introduced with the iPhone 4S. It utilizes speech recognition and artificial intelligence to respond to queries made by the user.

Siri can be activated on any iPhone (4S and later) by holding down the Home Button, and on later models, by simply saying "Hey Siri." Siri is capable of performing basic tasks such as making phone calls, starting apps, and turning off your phone, and, on later models, can also be set up to turn of the lights in your room, etc.

In order to make Siri more user-friendly, Apple has added a few jokes and references as responses to certain queries. For example, if you tell Siri "I am your father", she will respond by saying "Together, we can rule the galaxy as father and assistant. Searching my feelings..."