Seitenhistorie

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Of course all variants here have the issue that email addresses (and sometimes even login names) occasionally change, e.g. when people change their names after marriage/divorce or religious convertion. And sometimes such identifiers might even be re-assigned from one person to another (the worse case), maybe after a required dormancy period of a few years. So applications relying on eduPersonPrincipalName (or any identifier that doesn't prohibit reassignment) will need to be prepared to handle such changes.

For application designers integrators the potential alternatives to relying on eduPersonPrincipalName in the Higher Education and Research sector basically are:

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