Accessory for electronic cigarette

1. An apparatus configured to be detachably mounted on an outer surface of a housing of an electronic smoking article, the apparatus comprising:

a hollow body having inner and outer surfaces, the hollow body defining a channel therethrough, the hollow body configured to at least partially receive an outer housing of the electronic smoking article, such that the electronic smoking article is at least partially within the channel;

a sensor embedded in the hollow body, the sensor configured to detect an emission of the electronic smoking article;

a processor embedded in the hollow body, the processor configured to generate smoking topography data based on the emission by:

in response to detecting the emission, incrementing a counter, starting a timer, and providing a value of the counter as an output for display;

in response to detecting an end of the emission, determining a value of the timer, starting an idle timer, and providing the value of the timer as the output for display; and

in response to the idle timer exceeding a threshold and an absence of detecting a subsequent emission, powering down the apparatus; and

a display configured to provide the output.

2. The apparatus of claim 1 , wherein the sensor is embedded in a circuit of the processor.

3. The apparatus of claim 1 , wherein the sensor is configured to detect at least one of an electromagnetic field and a signal emitted by a heating element of the electronic smoking article.

4. The apparatus of claim 1 , wherein the sensor is configured to detect a light emitted by a light source of the electronic smoking article.

5. The apparatus of claim 1 , wherein the display is a liquid crystal display configured to generate an alphanumeric output.

6. The apparatus of claim 1 , wherein the display is a liquid crystal display configured to generate an alphanumeric output of at least one of the counter and the timer.

7. The apparatus of claim 1 , further comprising:

a power source embedded between the inner and outer surfaces of the hollow body, the power source configured to provide power to the processor and the display.

8. The apparatus of claim 1 , further comprising:

a memory configured to store the smoking topography data generated by the processor.

9. A method of generating smoking topography data from an electronic smoking article, comprising:

fitting an apparatus at least partially around an outer housing of the electronic smoking article, such that the electronic smoking article at least partially extends through a channel defined by the apparatus;

detecting an emission of the electronic smoking article;

in response to detecting the emission, incrementing a counter, starting a timer, and outputting a value of the counter to a display device;

in response to detecting an end of the emission, determining a value of the timer, starting an idle timer, and outputting the value of the timer to the display device; and

in response to the idle timer exceeding a threshold and an absence of detecting a subsequent emission, powering down the apparatus.

10. The method of claim 9 , further comprising:

stopping the timer when the emission is no longer detected.

11. The method of claim 9 , wherein the value of the timer is provided to the display device as a measure of puff length.

12. The method of claim 9 , further comprising:

incrementing the counter each time at least one of an electromagnetic signal an a field is detected.

13. The method of claim 9 , wherein the value of the counter is provided to the display device as a measure of puff count.

14. The method of claim 9 , wherein the detecting the emission comprises,

detecting light emitted by the electronic smoking article.

15. The method of claim 9 , wherein detecting the emission comprises,

detecting at least one of an electromagnetic signal and a field emitted by the electronic smoking article.