You attach the kill cable to your body and if the connection between you to your computer is severed, then your device will lock, shutdown, or shred its encryption keys. It’s designed to protect high-risk users’ data. Data could include private keys (eg theft of cryptocurrency assets), contacts of correspondence (eg sources of a journalist – such as whistleblowers), etc.
I build open-source USB Dead Man Switches and the accompanying (also free) software
You attach the kill cable to your body and if the connection between you to your computer is severed, then your device will lock, shutdown, or shred its encryption keys. It’s designed to protect high-risk users’ data. Data could include private keys (eg theft of cryptocurrency assets), contacts of correspondence (eg sources of a journalist – such as whistleblowers), etc.