He instructed Jillette to place a ring that he was wearing on a piece of paper and trace its outline with a pen.

NEWYORKER: A Pickpocket��s Tale

The device continues to read out words and sentences, adding in the ability to trace letters and write them out on its special paper.

ENGADGET

In an excellent, comprehensive paper on the subject, Ed Glaeser and his compatriats trace the level of metropolitan segregation alongside changes in housing prices by race.

FORBES: So, What Do We Do About Those Poor Black Kids?

Allianz, for example, which settled most of its policies under Germany's own sweeping post-war restitution programme, set up a team to examine 1.4m individual paper files on policies issued between 1920 and 1945 in order to try to trace any that remain unpaid.

ECONOMIST: Holocaust reparations