Your secrets.
Your business.
Your authentication data stays on your devices and, with optional backup, in your own iCloud account. We never store it on our servers or have access to it.
Two-factor codes that never leave your iPhone.
Sign In generates your authentication codes on your device and keeps them there. Nothing is stored on a server, so there is nothing to breach.
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Codes refresh every 30 seconds.
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Built so your secrets
stay yours.
Your secrets.
On your iPhone.
Behind Face ID.
Every code is generated on your iPhone and protected by Face ID. Your authentication codes never travel over the network.
Your iCloud.
Your choice.
Backup is entirely optional, in your own iCloud account. When enabled, your data syncs across your iOS devices using the same Apple Account. Turn it off at any time.
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Credentials stored
on our servers.
PRIVATE BY DESIGN
What’s yours
stays yours.
No Sign In account to create. No authentication data for us to see. Just your codes, on your devices, with optional backup in your own iCloud account.
Explore our privacy promiseSign In Support
A little help.
A simple hello.
Questions about Sign In? We’re here to help.
Just send us an email.
Get Sign In for iPhone
Free on the App Store.