[Polizeiposaune]

and a switch which has a physical air gap when off.

[itslennysfault]

Thanks for your suggestion, but at this time the NSA cannot allow this change.

[aitchnyu]

Mics listen for voice commands all the time and some cameras can be activated without their LEDs.

[ryanrasti]

Haha! That gave me a good laugh.

[MisterTea]

"But the switch will compromise its water tightness like the headphone jack does!" - every mobile sycophant.

[bigfatkitten]

Or worse: It might add 15 cents to the BOM!

[jojobas]

Magnets and reed switches? Crazy talk!