In the early 1950s programs were started to issue dog-tags to children. There was concern that in the event of a surprise atomic attack it would be difficult to identify the millions of children killed while at school. The program never became as universal as hoped.
A Knocker-up was a profession in England and Ireland that started during and lasted well into the Industrial Revolution and at least as late as the 1920s, before alarm clocks were affordable or reliable. A knocker-up’s job was to rouse sleeping people so they could get to work on time