Thanks to my coffee, this nearly self-destructed my keyboard

This story on The Register about a solid-state drive with inbuilt self destruct elicited this wonderful comment:

Self Destructing Drive?

Sir Clive Sinclair got there years ago with the Microdrive.

Should your data fall into enemy hands, the Microdrive cartridge would instantly be rendered unreadable. In fact if it fell into anyones hands, including your own, it was also unreadable.