Passwords & breaches
What Are Passkeys? Passwordless Login, Explained
A plain-language guide to passwordless sign-in — what a passkey actually is, why it beats a password, and how to add one to accounts you own.
See where you can add a passkeyOfficial settings only
Every step uses the platform's own Password & security screen.
We never handle credentials
We never ask for a password or a login code, and never store one.
Owner-only
Set up passkeys on accounts you own, or help a family member on theirs.
Stays on your device
Your passkey and biometric live on your phone, not on our servers.
HackSN is an educational security guide, not a login service — we never sit between you and your account.
Add a passkey to Instagram
Instagram supports passkeys from its official app on iPhone and Android.
- Open Accounts Center, then Password and security, then Passkeys
- Register your phone's face or fingerprint unlock
- Keep 2FA switched on as a backup while passkeys roll out
Add a passkey to TikTok
TikTok lets you set a passkey from account security on supported devices.
- Go to Settings, then Security & permissions, then Passkey
- Save it to your device or your password manager
- The passkey sits alongside your recovery options, not instead of them
Add a passkey to X (Twitter)
X offers passkeys as a login method, first on iOS.
- Settings, then Security and account access, then Security, then Passkey
- Currently added from the iOS app
- Pair it with an authenticator app for full coverage
Add a passkey to LinkedIn
LinkedIn added passkeys for faster, phishing-resistant sign-in.
- Settings, then Sign in & security, then Passkeys
- Create one on each device you personally trust
- Review active sessions afterward, since old logins stay signed in
Signing in with a password
- A fake login page can capture your password in seconds
- Reused across sites, so one breach can unlock many accounts
- You have to remember, type, and rotate it yourself
- Codes texted to you can be intercepted or SIM-swapped
Signing in with a passkey
- Unlocks with your face or fingerprint — nothing to type
- Bound to the real site, so phishing pages simply fail to log you in
- The secret never leaves your device or gets sent to a server
- Nothing to reuse, so one leak cannot cascade to other accounts
Passkeys are a strong upgrade, not a magic shield — keep recovery and 2FA in place while platform support is still rolling out.
FAQ
What is a passkey in plain terms?
A passkey is a login credential saved on your own device that you unlock with your face, fingerprint, or PIN, so you sign in without ever typing a password.
Are passkeys really more secure than passwords?
Passkeys are phishing-resistant because they only work on the genuine site and the secret never leaves your device, which removes the two biggest weaknesses of passwords: reuse and fake login pages.
Do I still need two-factor authentication if I use a passkey?
Keep two-factor authentication and your recovery options in place, because passkey support is still rolling out and you will want a backup way to sign in if you ever lose your device.
What happens to my passkey if I lose my phone?
If your passkey is synced to your Apple, Google, or password-manager account it restores on a new device, and you can always fall back to the account's official recovery flow to regain access.
Does HackSN ever see or store my passkey?
No, your passkey stays on your device and we never ask for, handle, or store any password, code, or credential, so there is nothing on our side for anyone to steal.