While the following incident is probably not relevant to any possible interference with aircraft systems, it surprised me at the time.
After an Enigma coding machine was stolen from Bletchley Park in April, 2000, a anti-theft system was installed to protect the remaining coding machines.
I was one of group touring the museum a couple of years ago during which the guide warned us not to take photos with digital cameras as it was liable to set off the alarm system. There was no caution associated with film cameras or flash photography, only with digital cameras. Though tempted, I did not test to see if the alarm system was
really that sensitive.
The alarm system would have been only inches from the camera so it seems plausible to me that it could have been triggered sometimes.
