Abstract: A fall prevention device comprising at least one sensor operable to detect a user has woken up while they are still within a bed and a notification unit operable to output a fall prevention warning to a user in response to the detection. By detecting when a user wakes up, rather than when they physically get out of bed, the device allows a fall prevention warning to be provided in advance of the user getting up. This warning can relate to a variety of different things (for example, warning the user to take their time before getting up, or to use the necessary aids), all in aid of reducing the likelihood of the user falling when they get up. The device thereby reduces the chances of a fall.