I brought an iPad, my laptop and my iPhone - they only took my iPhone when i entered the country - or, actually, they forgot, and I gave it up later on the trip, as I didn't want to get in troubles when leaving.
I could easily have left many devices there, with information etc.. In terms of communication devices, not so sure. There's absolutely no wifi in the country, and satellite devices are large, afaik.
I was war driving with my iPad in Pyongyang, searching for wifi.. NO wifi was detected, at all. Pretty interesting.
I lend my iPad to one of the guides for a week - the guide saw Breaking Bad Season 1 and heard Beatles and U2 :-) and even brought it home at night.
Give them 5 years to think about it, and might change their minds.
i'm dubious that's what they _actually_ believe in their hearts. They might have to say so on the outside, because saying otherwise is dangerous (you never know who is listening, or who might dob you in).
As for what the average North Korean actually thinks, it's hardly relevant. They act like they believe the fascist propaganda.
The weirdest thing was that our guide was very happy to discuss "taboo" questions. She asked us about our electoral system, and after we visited the DMZ inquired as to what our media said about North Korea. Initially we were elated that we had a "receptive" tour guide, but by the end we began to suspect that it was all a ruse to put us at ease. Did your guides do this?
I took about 5000 photos, and uploaded about 500 of them to my Facebook profile. There's descriptions to many of them. If you're interested, check them out here: https://www.facebook.com/media/set/?set=a.10151040723772055....
And feel free to ask any questions. I'll recommend visiting their country if you get the chance.