Aerosol-generating system with taggant identification

A method of controlling an aerosol-generating system,

• the aerosol-generating system comprising:
• an aerosol-generating article comprising a taggant having an identifiable spectroscopic signature, the taggant being excitable by light to emit a light emission, and
• an aerosol-generating device configured to engage with, and disengage from, the aerosol-generating article, the aerosol-generating device comprising:
• a light source configured to illuminate the aerosol-generating article engaged with the aerosol-generating device, and
• a light receiver configured to receive light emitted by the aerosol-generating article engaged with the aerosol-generating device;
• and
• the method comprising:
• illuminating, by the light source, the aerosol-generating article engaged with the aerosol-generating device so as to excite the taggant to emit the light emission,
• ending the illuminating, by the light source, of the aerosol-generating article engaged with the aerosol-generating device,
• receiving, by the light receiver, the light emission after the light source ending the illuminating of the aerosol-generating article, and
• analysing the light emission received by the light receiver to determine a characteristic of the aerosol-generating article.

An aerosol-generating device configured to engage with, and disengage from, an aerosol-generating article comprising a taggant having an identifiable spectroscopic signature, the taggant being excitable by light to emit a light emission, the aerosol-generating device comprising:

• a light source configured to illuminate the aerosol-generating article engaged with the aerosol-generating device;
• a light receiver configured to receive light emitted by the aerosol-generating article engaged with the aerosol-generating device;
• and
• a controller configured to:
• activate the light source to illuminate the aerosol-generating article engaged with the aerosol-generating device so as to excite the taggant to emit the light emission to be received by the light receiver,
• deactivate the light source to end the illuminating of the aerosol-generating article engaged with the aerosol-generating device, and
• analyse the light emission received by the light receiver after the light source ending the illuminating of the aerosol-generating article to determine a characteristic of the aerosol-generating article.