Abstract: A smart device for a household consumable includes at least one load sensor configured to measure a current load of a household consumable being supported by the smart device and a processor configured to compare the current load to a previously measured load to determine whether to increment one of a plurality of consumption event counters. The processor is configured to periodically transmit data located in the plurality of consumption event counters.

Abstract: A biometric device configured to be attached to a portion of a body of a user measures biometric data of the user. The device includes an optical emitter, a wavelength filter, an optical sensor and a processor, for sending a light to the body of a user, receiving light received from the user, filtering and processing it to measure biometric data of the user, including for example, heart rate and blood flow rate. In addition, the biometric device may include other sensors, such as a galvanic skin response sensor, an ambient temperature sensor, skin temperature, motion sensor, etc., to enable the biometric device to measure arousal or conductivity changing events, ambient temperature, user temperature and motion associated with the user. Additionally, information from each sensor may be used to further filter noise in one or more signals received by the sensors to provide biometric data to the user.