Your camera has a microprocessor and a ton of high speed digital stuff going on in it. Like RJH said, it’s not the intentional transmitters we need to worry about.

Yes, it’s pretty here in Chicago today, too bad you didn’t get to take the pictures. It’s a tradeoff.

Jamming in Moss Landing Harbor, CA
15 Apr 01 – 22 May 01, VHF/UHF television antenna with pre-amplifier caused GPS failures to all of Moss Landing Harbor
Boat owner purchased TV antenna, which was equipped with pre-amp
From interior location Amp’s emitter jammed all of Moss Harbor and 1km out to sea
No GPS in entire area = 37 days
Impact to Moss Harbor
Research vessels relied heavily on timing from GPS
Extreme difficulty going through harbor in foggy conditions
Notification to all vessels in area that GPS was down
Switched back to radar control for harbor entrances

The problem is that the risk is real. Field tests and less formal reports have confirmed that certain production runs of cell phones also jammed GPS. Some production runs of wireless mice jam other nav signals. Some damaged CD players were found to jam nav signals. There is enough redundancy and alternatives to keep the airplane in control, but intermittent jamming of navigation signals during takeoff and landing are a big enough risk that I agree with restricting the passengers.

An undamaged WiFi is unlikely to be an issue because the WiFi band is already full of all sorts of ugly signals (e.g., microwave ovens and radars) and aviation electronics already protect against those. The risk will be from damaged systems that also broadcast on some other frequency.