A signature analysis system can include a mobile signature analysis unit and a home unit. The mobile signature analysis unit can include a sensor module to monitor and capture an entity's activity information and a processing unit to analyze the activity information to detect a signature and determine an event corresponding to the signature. If the mobile signature analysis unit determines that a user has experienced a fall, for example, a notification can be sent to the user's caregiver by one or both of the mobile signature analysis unit and the home unit.