Ann: SOR Powers Bluetooth Sensor Device with Moisture, page-69

Please correct me if I’m wrong
water passes between the graphine conductors (anode and cathode) exchanging electrons in one direction between the conductors producing a potential difference (voltage) just like a static charge on a way smaller scale.

I think this would class as a friction method production of electricity and air flow will be need to create the friction.

should be a purely physical reaction meaning it can return to its previous state.

Heat will be produced on discharge to electron flow.

hopefully next week they announce plans slap a timer and the most efficient way to monitor a heart beat on it.
plus a way to record the data.

I still think this will be a disposable product to start, cleaning is a problem as once the airflow stops the charge will, hopefully the have a few engineering tricks to sort it out.