[LMB] Bujold science developing in our world

Laura Gallagher celticdragonfly at gmail.com
Sun Sep 11 21:35:36 BST 2011

Everyone remember Baron Ryoval's signet ring?


"An engineer has rigged up several devices that enable a touch
interface to respond to nuances such as pressure."
"F. Signet Ring
Capacitive touch screens can also accept input from multiple
simultaneous touches. That's the basis of a low-level security feature
Knuepfel designed. He made rings that use conductive material to
create several electrical pathways from the user's fingers to the
screen. These pathways are arranged in a distinct pattern; software on
a tablet could look for a user's pattern before allowing access to
private content."

Laura Gallagher

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