| Show in ingenious t enious london pillboxes Pill PiR boxes deceived even the natives london is now demolishing the many pillboxes pill boxes erected in 1940 to defend the city against invasion says colliers although concrete fortifications they were never detected by the aerial cameras cameras of the enemy being ingeniously camouflaged as newsstands news stands information booths and similar small structures for some time they even deceived passersby passers by despite having such facetious signs as closed on sundays not open during the week |