null0pointer

What about a 'distress' password that unlocks the device to a benign but plausible state?

Actually I would consider the adapter part of the headphone cable since headphones (and other audio devices) are the only things that need it.

Not sure how you can change ETC int ETH 1:1... Any address that had a nonzero balance (except for the attacker ;) ) at the point of the hardfork has the same balance in both ETC and ETH. Since the private key for that address can sign on both chains. Some exchanges allow you to manage the two balances separately and you can exchange ETC for ETH but not 1:1, at whatever the market rate is.

You can't put the headline in there before it's been published, whereas you can put any date you like.

The idea with a canary is that some government request can stop you from disclosing that request ("hey everyone we got subpoena'd") but they can't stop you from NOT updating a page. Putting a newspaper headline on the page basically provides a timestamp so anyone checking can go "hey, their canary hasn't been updated in 6 months... maybe something happened". At least that's my understanding of it.

Thanks! Legend!

Realised my email actually wasn't in my profile :O still hanging out for an invite though

Very exciting project! I'd love an invite if anyone can spare one. Email in profile.