[chbot] Group project: Wireless remote security monitor

[Mark Atherton]

GSM voice will soon be switched off, leaving 3G (HSDPx) and 4G 
(not-a-clue). Pretty sure that newer phone systems use an encrypted 
channel to carry phone ID stuff -- need to check this.

Prevention vs Cure etc. The realities of getting the police involved 
seem remote to me. If you are serious about this then you should talk to 
them first and find out what kind of information they need to secure 
confiscation of equipment / arrest. Not taking this step leaves you wide 
open to the vagaries of second guessing the legal situation and spending 
huge time, money and effort for nought.

Same issues relate to the NZTA system - what is recorded, for how long, 
and who has authorized access to it.

Like the idea of an audio recorder triggered by the drone acoustic 
signature...

Again, not sure if jammed drones fall out of the sky, hover, or return 
to launch site (via GPS). more opportunities for speculation.

It seems reasonable that drones will use ISM for control, it seems 
reasonable that you are allowed to take steps to protect yourself and 
your property, it seems reasonable that you can post notices warning 
drone owners that they are not permitted to fly over your air-space. 
Again, this is only my viewpoint, and is speculation.

-Mark


On 22/04/2018 12:11 PM, zl3ag at radioengineering.com wrote:
>
> We're not just trying to prevent these guys from operating nearby, 
> we're trying to be able to ID them by their Wifi/BT ID's so the police 
> can collar them.
>
> The NZTA system operates in many locations. I don't have a smartphone 
> so I'm hoping Apple and Google enable BT discovery as a default and if 
> so I find it highly likely most people won't switch that off. The 
> tracking systems in malls probably rely on that.
>
> If not BT then there's always sniffing the cellphone SIM ID from the 
> GSM signal? Mark?
>
> Also, drones have a fairly unique audio signature that could be 
> detected via microphone? That could be the trigger for logging the 
> other stuff and sending out alerts.
>
> Detect, log identifying data, disable the drone and then call the cops 
> in while they're out of the car trying to figure out why the drone 
> fell out of the sky. :^)