Methods and systems () for trajectory prediction are provided. The methods and systems () include operations comprising: receiving () a plurality of observed speed points; processing () the plurality of observed speed points corresponding to the observed trajectory by a machine learning technique…

It is provided a wearable device for determining when a user has fallen down. The wearable device comprises: a first biometric sensor for obtaining first biometric data of the user, wherein the first biometric sensor is a first accelerometer configured to measure acceleration of a part of a first…