In a first aspect, a method is provided for determining a level of wakefulness of a driver of a vehicle using a mobile telephone. The method includes (a) employing a wearable monitor to detect a biometric parameter of a user while the user is driving a vehicle (b) communicating biometric parameter information from the wearable monitor to a mobile telephone of the user while the user is driving the vehicle (c) employing the mobile telephone to obtain a level of wakefulness of the user while the user is driving the vehicle, the level of wakefulness of the user being determined based on biometric parameter information received from the wearable monitor and (d) if the level of wakefulness determined for the user is below a predetermined level of wakefulness, employing the mobile telephone to attempt to increase the level of wakefulness of the user. Numerous other aspects are provided.
