Today"s policemen in large cities throughout the world 21 on modem inventions to help them in their work. In most places motor scooters and police patrol cars have 22 away with the need to patrol a beat on foot or on horseback. Policemen use telephones, 23 located throughout their districts, to make immediate 24 with headquarters. Radio, television, and computers 25 to speed the work of the modern force. Even boats and helicopters are part of the equipment of metropolitan police department.
New technical inventions are widely used to 26 crime and speed the 27 of criminal cases. Electronic computers reduce from hours to minutes the time spent in 28 for fingerprints. Witnesses" 29 of a criminal are coded and fed 30 a computer. The machine then sorts through the picture file of known criminals and selects the name and photograph of the most 31 suspect. Lie detectors, 32 such evidence is acceptable, are used to 33 the truth.
A criminal-identification tool in 34 in some places is the image reflector, or "image-maker". This machine 35 a picture of a face 36 a screen. A detective manipulates the machine to 37 the parts of the face to match those of the suspect 38 described by the witnesses. The final picture is then photographed and sent to police in other areas. Sometimes skilled sketch artists employed by police departments 39 oral descriptions into 40 of a suspect.