# \#coredata

**URL:** https://community.auth0.com/tag/coredata/589.md

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## [How to handle saved username in IOS Core Data?](https://community.auth0.com/t/how-to-handle-saved-username-in-ios-core-data/6900)

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**Author:** [@christoforosl08](https://community.auth0.com/u/christoforosl08)\
**Replies:** 1\
**Last updated:** [June 5, 2017, 2:47pm UTC](https://community.auth0.com/t/how-to-handle-saved-username-in-ios-core-data/6900 "2017-06-05T14:47:30Z")

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What is the best way to re-authenticate a user from a username / email saved in IOS’s core data? The idea is to save the username after the user has logged in, and then keep using that username until they logout. The d…