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trap and trace device

A trap and trace device is a device or process that records the sources of incoming signals to a specific phone or computer. This is often used by law enforcement as the advanced counterpart of Caller ID. A trap and trace device identifies the phone numbers or Internet addresses of incoming signals, but does not include substantive information transmitted by those signals. 

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trigger laws

Trigger laws are laws designed to take effect after a major shift in controlling law occurs. Legislatures will write laws with the intention that those laws come into effect after a shift in the law allows them to be legally enforced.

turn state's evidence

Turn state’s evidence (also known as “turn King’s evidence”) or to "flip” means the defendant chose to reveal valuable evidence to the prosecutor, in exchange for a reduction of the charge or the dismissal of some charges. When the defendant “flips” they are said to have "turned state's evidence.” 

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