An aerosol generation system for generation of an aerosol from an aerosol-forming precursor includes an electrically operated heating system to heat the precursor to generate the aerosol; a flow path for transmission of flow, including the aerosol, to a user; the heating system arranged in fluid communication with the flow path; electrical circuitry to measure a change in a property associated with the heating system due to a cooling effect on the heating system from a user inhalation through the flow path, to determine a characteristic of the inhalation based on the measured property associated with the heating system, and to identify the user based on the determined characteristic.

An aerosol generation system for generation of an aerosol from an aerosol-forming precursor includes an electrically operated heating system to heat the precursor to generate the aerosol; a flow path for transmission of flow, including the aerosol, to a user; the heating system arranged in fluid communication with the flow path; electrical circuitry to measure a change in a property associated with the heating system due to a cooling effect on the heating system from a user inhalation through the flow path, to determine a characteristic of the inhalation based on the measured property associated with the heating system, and to identify the user based on the determined characteristic.

A circuit board for a non-combustion flavor inhaler includes a substrate and an electrically conductive ink pattern printed on the substrate. The substrate includes paper. A percentage weight loss of the paper from room temperature to 290° C. is less than 20% of a percentage weight loss of the paper from room temperature to 900° C. under a condition that allows air to flow at a flow rate of 100 mL/min while elevating a temperature of the air at a speed of 10° C./min.

A circuit board for a non-combustion flavor inhaler includes a substrate and an electrically conductive ink pattern printed on the substrate. The substrate includes paper. A percentage weight loss of the paper from room temperature to 290° C. is less than 20% of a percentage weight loss of the paper from room temperature to 900° C. under a condition that allows air to flow at a flow rate of 100 mL/min while elevating a temperature of the air at a speed of 10° C./min.

An induction heatable cartridge for use with an induction heating assembly includes a solid vaporisable substance and at least one ring-shaped induction heatable susceptor held within and surrounded by the vaporisable substance. The susceptors are held in position such that, when the cartridge is positioned in an induction circuit in use, different regions of the outer edge of the one or more susceptors are at different distances from the induction circuit to provide different heating characteristics in the different regions. The centres of each of the at least one susceptors are aligned along a common axis.

An induction heatable cartridge for use with an induction heating assembly includes a solid vaporisable substance and at least one ring-shaped induction heatable susceptor held within and surrounded by the vaporisable substance. The susceptors are held in position such that, when the cartridge is positioned in an induction circuit in use, different regions of the outer edge of the one or more susceptors are at different distances from the induction circuit to provide different heating characteristics in the different regions. The centres of each of the at least one susceptors are aligned along a common axis.

Provided is an aerosol generating device including a heater configured to generate an aerosol by heating an aerosol generating substance; and a controller configured to control power supplied to the heater, wherein the controller distinguishes a first section, a second section, and a third section and controls power supplied to the heater, and calculates a control reference ratio by using at least two from among the first section, the second section, and the third section and controls power supplied to the heater based on the calculated control reference ratio.

An aerosol provision device and related methods and means for generating aerosol from an article including portions of aerosol generating material. The device includes a receptacle for receiving the article including, portions of aerosol generating material, an outlet fluidly coupled to the receptacle, at least one aerosol generating component configured to perform an aerosolization process on one or more of the portions of aerosol generating material when the article is received in the receptacle and control circuitry for controlling the aerosol generating component. The control circuitry is configured to cause the at least one aerosol generating component to generate an amount of aerosol from a respective portion of aerosol generating material based on the distance of the respective portion of aerosol generating material from the outlet.

An aerosol provision device and related methods and means for generating aerosol from an article including portions of aerosol generating material. The device includes a receptacle for receiving the article including, portions of aerosol generating material, an outlet fluidly coupled to the receptacle, at least one aerosol generating component configured to perform an aerosolization process on one or more of the portions of aerosol generating material when the article is received in the receptacle and control circuitry for controlling the aerosol generating component. The control circuitry is configured to cause the at least one aerosol generating component to generate an amount of aerosol from a respective portion of aerosol generating material based on the distance of the respective portion of aerosol generating material from the outlet.

An electronic cigarette device has a vapor flow channel arranged to guide a generated vapor to a mouthpiece opening, and a sensor arranged in the vapor flow channel to determine a temperature in the vapor flow channel at a position physically displaced from an atomizer. The electronic cigarette device further includes one or more processors configured to retrieve from the sensor a measured temperature data set including one or more temperature measurements as a function of time, compare the measured temperature data set with predetermined temperature data, wherein the predetermined temperature data is indicative of the temperature of the vapor in the vapor flow channel of the electronic cigarette device at different fluid transfer element saturation levels, and determine and perform a further action based upon the comparison.