I'd like to see the internals of the BT ecig, too. If they claim that the design produces a perfect puff every time, they better be able to explain how the internal monitoring system accomplishes that. I don't see perfect puffs from a cigarette look alike. There's little room for the electronics needed to produce the perfect vape.
I spent a career maintaining complex devices that used complex monitoring systems. I'd love to see how they accommodate the electronics and the sensors needed in that small package. My take is there's not room for what's needed. It's all hyperbole from marketing, IMHO.
OK. lol.
Here's my current GUESS based on the news reports. *** Warning - total guesswork based on news ***
There's a link that talks about non-volitle memory in the cartridge. A hit counter. Also talks about monitoring ...something...2000 times per second. Probably simply voltage. Or current. They also talk about having "around 200 puffs per carto = about a pack of cigs".
It's also referred to as a "digital e-cig" or some such.
So....I think they are monitoring something, adjusting the voltage on the fly, and counting hits. They determined (

) that after about 200 or so hits the coil is 'gunked' and thus won't perform as well. Maybe it's a scale. 0-20 hits = lowest power, 21-40 hits = a little more, etc. Maybe they have an algorythim for being more gentle near the "end" of the cart so it doesn't get nasty-burt-taste. Who knows.
But they decide that after a certain point...the cart won't perform up to their expectations. So it quits working.
That's genius from a product perspective. It guarantees that the carto can't be refilled. You have to buy another $3.00 carto.
What happens if you screw a standard carto (even if you have to rig an adapter) onto the battery? Will it function? (Bet not)
What happens if you screw a standard battery onto one of their smart cartos? Will it function? (Bet not.)
I don't know. Could they come out with a refillable carto? Sure...as long as the battery had enough smarts to recognize a different type of carto (could even transmit a model # back to the battery..lol. Or a "allowed features" byte.)
Like everything else...it's the COST. I vape for less than 20 cents per day now. How much the digital stuff raises the cost vs provides "features" or "locks in options"...IDK.
I'm betting that their battery cost is at or over $10.00 per battery and they are planning on making it up on the carto sales. The cartos aren't that cheap either, I'm guessing.
It was encouraging to hear they had their own automated manufacturing. That should keep the cost down in volume, I hope. Maybe they can get the production costs down and in-line with existing tech.
I'm most worried about e-juice. Their juice's contents as well as for the industry as a whole (having access to high quality supply).