Philips Lifeline is the leading medical alert service in the U.S. Philips Lifeline Medical Alert Service provides a quick and easy response to requests for help 24 hours a day, 365 days a year. Our AutoAlert fall detection technology automatically seeks help if a fall is detected, even if the user is unable to press the help button. More than 7 million Americans rely on Philips Lifeline to feel safe at home or on the go.