US Patent 10448670 Aerosol generating system with consumption monitoring and feedback

An aerosol-generating system for oral or nasal delivery of a generated aerosol to a user is provided, including a heater element configured to heat an aerosol-forming substrate to generate an aerosol; a power source; a controller configured to control operation of the heater element, the controller being configured to detect a change in air flow past the heater element: a first data storage recording detected changes in airflow past the heater element and data relating to the operation of the heater element; a second data storage including a database relating changes in airflow and data relating to the operation of the heater element to the properties of the aerosol delivered to the user; and an indicator coupled to the second data storage configured to indicate to the user a property of the aerosol delivered to the user.