A computer-implemented method to be performed by a user device for supporting a user, the method comprising: providing an acceleration measurement of the user by an acceleration sensor of the user device; measuring at least one vital parameter of the user by an electrical device of the user if the acceleration measurement is above a predefined acceleration threshold, wherein the vital parameter of the user is a gait of the user, wherein the gait of the user is determined by determining periodical accelerations caused by the gait of the user; and signaling, by a signaling device, a need of assistance for the user if a frequency of the gait after detecting the acceleration measurement above the predefined acceleration threshold is lower than 40 % of the frequency of the gait before detecting the acceleration measurement above the predefined acceleration threshold, wherein the gait before detecting the acceleration measurement above the predefined acceleration threshold is determined by determining periodical accelerations caused by the gait of the user by the electronic device of the user, wherein: the electrical device of the user is the acceleration sensor of the user device and the periodical accelerations are determined by the acceleration sensor of the user device, or the method further comprises receiving, by a measurement initiation device of the user device or a receiver of the user device, information about the vital parameter from a wearable device of the user connected to the user device, the periodical accelerations being determined by an acceleration sensor of the wearable device. providing an acceleration measurement of the user by an acceleration sensor of the user device; measuring at least one vital parameter of the user by an electrical device of the user if the acceleration measurement is above a predefined acceleration threshold, wherein the vital parameter of the user is a gait of the user, wherein the gait of the user is determined by determining periodical accelerations caused by the gait of the user; and signaling, by a signaling device, a need of assistance for the user if a frequency of the gait after detecting the acceleration measurement above the predefined acceleration threshold is lower than 40 % of the frequency of the gait before detecting the acceleration measurement above the predefined acceleration threshold, wherein the gait before detecting the acceleration measurement above the predefined acceleration threshold is determined by determining periodical accelerations caused by the gait of the user by the electronic device of the user, wherein: the electrical device of the user is the acceleration sensor of the user device and the periodical accelerations are determined by the acceleration sensor of the user device, or the method further comprises receiving, by a measurement initiation device of the user device or a receiver of the user device, information about the vital parameter from a wearable device of the user connected to the user device, the periodical accelerations being determined by an acceleration sensor of the wearable device. the electrical device of the user is the acceleration sensor of the user device and the periodical accelerations are determined by the acceleration sensor of the user device, or the method further comprises receiving, by a measurement initiation device of the user device or a receiver of the user device, information about the vital parameter from a wearable device of the user connected to the user device, the periodical accelerations being determined by an acceleration sensor of the wearable device.