Pasting a password into a chat message is how most shared logins leak. The good news: you can give a teammate access to an account without ever handing them the raw password. This guide covers how encrypted sharing, passkeys, and autofill let a team sign in while the credential stays sealed.
Why sending the password is the problem
A password pasted into chat, email, or a shared doc is copied forever. You cannot un-send it, you cannot revoke it, and you have no record of who used it. When someone leaves, your only option is to change the password and re-share it with everyone else. That is the pain a good sharing tool removes.
How to share access without sharing the raw password
Three mechanisms make this work:
- Encrypted vault sharing: the credential is sealed to each member and only decrypted on their device, so it never travels as plain text.
- Passkeys: a shared software passkey signs the user in without any password to reveal at all.
- Autofill: the tool fills the login on the site so the teammate uses it without ever seeing or copying the password.
What good sharing looks like
The credential is sealed per member, the server only holds ciphertext, and removing someone rotates the key so their copy stops working. That is revocation you can trust, not the honor system.
Do it with Coauth
- Save the login in Coauth, or register a passkey for it.
- Create a team and share the login in. It is sealed to each member.
- Teammates autofill the shared password or use the shared passkey from their own browser.
- Remove anyone who leaves. The key rotates and their copy is useless.
The honest limit
If a teammate can sign in to an account, a determined person could still read a revealed password or copy what they see once inside. Sharing tools reduce casual leakage and give you clean revocation, they do not make a shared account as private as an individual one. Share service accounts, and for anything sensitive keep people on their own logins.
Frequently asked questions
Can I give someone access without telling them the password?
Yes. With encrypted sharing and autofill, a teammate can sign in without ever seeing the raw password, and with a shared passkey there is no password to reveal at all.
How is that different from sending the password?
A sent password is copied forever with no revocation. Encrypted sharing seals the credential per member, keeps only ciphertext on the server, and rotates the key when someone is removed.
Is it truly impossible for them to see the password?
A reveal or copy is often still possible if the tool allows it, and anyone who can sign in can act in the account. Sharing removes casual leakage and gives clean revocation, it does not make a shared account fully private.
What tool does this for free?
Coauth shares one login, password or passkey, for free, sealed to each teammate, with autofill and a key-rotating revoke.
Share one login without buying five seats
Coauth is live on the Chrome Web Store and free to start. Zero-knowledge, one-click sign-in, revoke anyone in a click.
Add Coauth to Chrome →