Someone claimed it would be possible for the manufacturer to build in a battery in the module, I said no, that person said yes. And now I say: No, it's impossible, just believe me. You read the post from the pcb designer stating that the module needs 3.3A spikes, didn't you? And it's average power consumption (way lower than 3A*?V) is still much, much too high to be powered by such a small battery. And it /could/ be easily found when examining the chip.
If its said to be 3.3, in the "inside" it may actually require few microAmp and half a volt to work.
After all, "VillainTech" have progresses over the past few millenniums.
If even not 3G, but it still may implement a short-range transmitter.
And as i said, "few microamp" are currently available to wide public as a "Betavoltaics". Too expensive to be everywhere? Maybe because there is no "villain discount"?
And such a battery maybe extremely small and may keep the module transmitting for a serious amount of time. (+10 years sounds scary)
I thought about answering you in detail. But actually - just no.
OBJECTION! This argument makes no god damn sense!
Exactly. Hence the "no".
That is: Your argument makes no sense. It is impossible to make a good answer in detail because all your details are messed up.
Basically, there are atleast the electric field in the Pyra which may keep the module running.
Seriously? Ok, I'll bite:
You posit that there might be a hidden transmitter in the GSM/GPS module that might need "a few microamps and half a volt" to operate, and that might thus run an extended length of time from a hidden battery, a betavoltaics module or even the stray electric field of the Pyra. Have I gotten that right?
That opens a few questions. Off the top of my head:
1) What kind of semiconductor technology would that module use? As far as I know, the forward drop of a silicon NP junction is still about 0.7 volts, and I find it hard to believe that there is a useful amplifier configuration that would not need at least three junctions between + and - somewhere in the schematic?
2) Let's say we find a magical semiconductor technology that has a forward drop of 0.15 volts. That is awfully close to induced noise, though. In particular, as you yourself point out, inside the pandora where there's a lot of quick digital switching going on nearby. How would the module be able to reliably differentiate between one and zero?
3) OK, so we have really massive shielding and big fat (although tiny, so that they fit inside the module without arousing suspicion) decoupling caps. Fair enough. How will the secret transmitter transmit? I mean, you'd need an antenna of some sort, but the obvious antenna (the GSM one) will be tuned to the GSM bands, not the super secret villain band, whatever that is. Would ED get a module with two antennas and a note going "Oh hai, please connect this other antenna too - Not that it is used for anything, mind, just for fun, eh?". Remember, we just massively shielded the module from interference from the outside, which means that the world outside is equally shielded from transmissions from inside the module.
4) So let's say we solved this. We pressed a magic antenna pattern onto the outside of the module, we have magic decoupling of the antenna so that it won't bring in any of the noise we so carefully shielded against in number 3, and it is invisible so noone gets suspicious. We have "a few microamps and half a volt", which means we have access to a microwatt of transmitter power. Exactly how would this transmission get a range that reaches even outside the Pyra casing? Let alone somewhere where it could be unobtrusively picked up by anyone or anything?
Now, I'm not an electronics guy at all, so I usually keep my mouth shut about these topics. These things seemed too obvious, though. I'm sure that someone with more knowledge than me can pick out more problems. The thing is, though, that we're not talking "oh, they might have Secret Technology" kind of problems here - We're talking violations of the laws of physics. Which are usually difficult to pull off.