This is Surrey Today [UK]
16 August 2013
RESIDENTS who were worried criminals were leaving
sinister markings outside their homes to target them for crime have been
reassured after they were revealed to be official water company markers.
Surrey Police acted after a 49-year-old from Hurst
Green reported mysterious T-shaped lines had appeared outside her property on
Tuesday last week.
The lines appeared on the kerb directly outside her
home, and the occupant believed it was to identify her house as a target for
dog theft. […]