The correct answer "all of the above."
Although details of the sealing procedure vary according to each state, we can say that the general guidelines include the following.
When evidence is collected in a bag and sealed with tape: the tape should cover the entire seal, the tape should be signed all the way across the seal, and it must be re-sealed and re-signed if it gets opened again.
These procedures are very important because the information collected at the scene of the crime could be determinant to resolve the crime. Police, detectives, and specialists know that they must keep evidence from any intromission and cannot be corrupted to do proper research.
Every police department has their manuals and procedures guidelines to correctly handle evidence.
