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Meüller was the first people suggest the medical and legal researchers to use presumptive test for salivary amlyase.
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Frits Zernike , a Dutch physicist, developed the first interference contrast microscope, a phase contrast microscope, It is very powerful develop that won the Nobel prize.
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Holzer published the first artical talking about the usefulness of secretor status for forensic applications.
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RR Race first described the Kell blood group system
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RF Borkenstein is captain of the Indiana State Police, develop the testing of alcohol's field sobriety.
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The National Law Enforcement Telecommunications System was come out. It help the state swithhing message togther except Hawii. And link all police computer.
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NCIC is a computerized that when police wanted people who have crime, and find out the missing vehides, weapons and same things valuws. it can make things become easy to control.
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AT&T announces make a special number 911 for people to call to police office when they some crinme or dangerous things. It will be 24 hours hearing for people and very help foe policeman to get evidence.
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Rockwell International company was used the first fingerprint reader at the FBI. It is not really popular at that time. But useful.In 1979, the Royal Canadian Mounted Police also used the first fingerprint identification system (AFIS), It is very important prove at that time. Also help the develop for future.
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Zoro and Hadley in the United first evaluated GC-MS in order of forensic purposes.
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Brian Wraxall and Mark Stolorow developed the “multisystem” method in order to test the PGM, ESD, and GLO, also developed the way how to typing blood serum proteins
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In order make the 911 system more perfect can helpful. The police apartment make change when people calling 911. They can cheak the telephone number and the address.
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Through the time passed, The police learning how to used computer. Also more than 90 percent s of police used computer to criminal investigations, budgeting, dispatch, and manpower allocation. they also able to solve diffcult and confused cases.
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The National Academy of Sciences published that there will nothing questions of DNA evidence when police can peove it, than the people will be sentencing.
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In Frye v. United States , polygraph test results were ruled not useful. It effcet this crime change the results. They also state that is test is not use for every crime.
