The person who usually engaged in criminal activities to earn a living would like to eliminate his rival in the criminal business.

The person who is apprehended in the commission of a minor offense and seeks to be prosecution by revealing information concerning a major crime.

This methods of identifying depends on the ability of the witness to describe the person seen committing the crime.

Method of identifying criminal through sketches must be employed to help the witness draw a picture of the criminal.

The witness maybe taken to the photo laboratory to examine the photograph files of known criminals.

These are criminals whose pictures are available from police files and records.

These are criminals whose identification is furnished by eyewitnesses only.

It is a direct acknowledgement by the accused in a criminal case of the truth of his guilt as to the crime charged or of some parts of the commission of crimes for which he is charged.

It is the statement of facts by the accused in a criminal case which do not directly involved the acknowledgement of guilt in the commission of crimes for which he is charged.

Those who compelled by fear or self interest. He is afraid that when his confederates commit crimes, he may be placed in a dangerous situation.

This is the paid informant and always has something to sell to the police. He may be a valuable source of information.

These informant are operators of license premises who do not want their place of business to become the hang out of dangerous criminals.

The person who usually engaged in criminal activities to earn a living would like to eliminate his rival in the criminal business.

The person who is willing to cooperate in giving information to express appreciation or obtain a privilege.