Passage: Cortana has a built in system of reminders which for example can be associated with a specific contact; it will then remind the user when in communication with that contact, possibly at a specific time or when the phone is in a specific location. Originally these reminders were specific to the device Cortana was installed on, but since Windows 10 Microsoft synchronizes reminders across devices.

Question: What personal assistant is associated with Windows 10?
Cortana