Deprecated since Mountain Lion. https://issuetracker.google.com/40474030

It’s what Apple experimented with before they came up with the current entitlements system.

Entitlements are a great system for user applications, but pretty much unusable for OSS system applications as AIUI they need codesigned binaries

They could have designed a system to put the code signature inside Mach-O but they chose not to.

I wouldn’t really say it compares to entitlements

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