I did an intro to Bitcoin Guard and how it can help users here: https://delvingbitcoin.org/t/introducing-bitcoin-guard/2049

Guardian Address for Physical Coercion Resistance

Attacks against bitcoiners are becoming more common across the world.

I’ve been working on a mechanism that acts as a self-sovereign “panic button” that simultaneously locks wallets and allows a security response. The idea is that you buy time and coordinate with security teams or law enforcement to prevent the loss of bitcoin and enhance your physical security.

Users carry a pre-signed lock transaction with them that can be activated via any device that can ‘curl -X POST ’. Lock signatures may only be used once.

This makes hands free activation possible (Alexa, lock my bitcoin), or providing the sig to any operation that makes it easy to activate.

Technical details:

Wallet implementation: https://github.com/bitcoin/bips/pull/1972

Protocol: https://github.com/bitcoin/bips/pull/1973

“Imagine if gold turned to lead when stolen. If the thief gives it back, it turns to gold again.” - Satoshi Nakamoto