Since this has recently been discussed here.
https://www.snopes.com/fact-check/signal-project-2025/
"No, Project 2025 doesn't advise government officials to use Signal to avoid recordkeeping laws
"Project 2025 does not recommend government officials use Signal or other chat applications. In fact, the 'Project 2025 training videos' referenced by some social media users actually show a Project 2025 contributor, who spoke in the footage, explicitly warning future political appointees to be careful *not* to violate recordkeeping laws if they use encrypted chat platforms with auto-delete functions like Signal. Therefore, we have rated this claim as *false*.
"However, these videos do offer strategies for avoiding public-record request disclosures, including by having conversations in person rather than through a texting chain. The Heritage Foundation, the group behind Project 2025, did not immediately respond to a request for comment."
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