Techniques are provided for contacting emergency response services when certain conditions are met. In some instances, it may be determined, by a wearable device, whether a user has responded to a first user interface prompt displayed in response to detection of a physical event associated with the user. In accordance with a determination that the user has not responded to the first user interface prompt after expiration of a first time period, certain actions may be performed. For example, a countdown timer may begin to run for a second timer period. During the second period, an audio alert and a haptic alert may be output by the wearable device. In accordance with a determination that the user has not responded to a second user interface prompt prior to expiration of the second time period, a communication channel request may be transmitted to an emergency response service by the wearable device.