There's a great smartphone app called Federal Evidence Applied, available for download here for the iPhone: https://apps.apple.com/us/app/federal-evidence-applied/id1232973956 , for $1.99, which is a great tool to have in the courtroom. The app is from David Shroyer, who is apparently a private developer, but it gives every sign of being extremely well thought-out. It is designed to take you through the steps of objecting to, admitting or authenticating evidence in a federal trial, through a series of guided menus. You can select a type of evidence:
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. . . answer questions with respect to the nature of this evidence:
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. . . and ultimately conclude in a green or red screen which indicates if the evidence can come in.
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After questions concerning the admissibility of a police report . . .
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. . . the user will be prompted run an authentication screen:
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. . . in order to show what must be done to verify that a document is genuine.
An additional screen can then be run to check to see if the document satisfies the Best Evidence Rule.
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Additional automated screens are available for competency; relevancy; prejudicial impact; hearsay; confirming the form of a question by an attorney is appropriate; different types of evidence (such as deposition or judicial notice of some fact); and when a court can make a preliminary determination on admissibility.
A separate guided menu is available to check to see what needs to be done to lay the ground for an objection to the admission of evidence.
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The app also includes the text of the Federal Rules of Evidence.
Assuming you can get permission to bring your phone into a courtroom, this is a great tool to quickly help an attorney look up the steps she needs to follow to get evidence in, or keep it out.