The light, slender slivers of metal are designed to fit neatly into the hand at one end and the mouth at the other, with wide, flat surfaces for the fingertips to hold on to.
It has large feet with the fingertips expanded into flat adhesive discs and the digits fully webbed.
When I take her back to her flat, I start one final fingertip search for the teeth.
These technologies modulate surface friction for haptic rendering, by inducing a squeeze film effect or an electrostatic adhesion force between a fingertip and a flat surface.
The prayerful gesture of hands pressed flat against one another with the fingertips pointed upward the symbol of the flame is practiced among Roman Catholics.
Specialist officers carried out fingertip searches at a flat north-west of the city on Wednesday, while a second team of detectives, aided by a helicopter crew, combed the nearby park where her handbag had been discovered.
"You use the flat of your fingers, dear, not your fingertips, and you go in circles," she explained to a customer, demonstrating on a model of a breast.
