A new style of integrity tape available includes a space for the packer s right thumb print. This combination of integrity tape and markings will ensure the evidence has been satisfactorily protected from tampering. Preserving the evidence doesn t stop with packaging. The evidence must handled properly and stored in a temperature-controlled environment. Sitting in a hot vehicle for long periods of time could invalidate some analysis.
Temperature can greatly affect outcome, whether it is extreme heat or freezing.
Conclusion Preservation techniques must be used in every aspect of crime scene processing and physical evidence collection. To prevent the loss or destruction of the physical evidence, the scene must be secured in a timely fashion and physical barriers must be used. Physical evidence is normally fragile and as such, requires great care to be used in its handling. By doing so, the investigative value of the physical evidence recovered from the crime scene can be maximized.