ABSTRACT
Previous chapters have examined how the criminal law is used to define certain types of behaviour as being criminal and how, when people behave in these ways, they create an information profile. This chapter examines the techniques that are available to investigators to locate, gather and use the information in that profile. Although there is a limited number of these techniques, the range of circumstances in which criminal offences are committed and the many ways in which the various players behave afterwards means that these techniques are used in a wide variety of ways. Proficiency in applying them across the full spectrum of situations where they will be required is a key skill for investigators.
