Day two of our document signing series is about the signer. Today's video shows a recipient signing an agreement on a phone with a single passkey prompt.

The friction most signers know

Signing is often the slowest step of an agreement, and the reason is rarely the document. It is the signer being asked to create an account, choose a password, confirm an email address or remember credentials for a service they use twice a year.

Every one of those steps is a chance for the signer to stop. And none of them makes the signature more trustworthy. A password can be shared, guessed or reused. An emailed link can be forwarded.

How signing works on Attest

On Attest, the recipient opens the link and signs. There is no account to create and no password to remember.

The signer opens the agreement from the email.
Attest guides them to each required field: signatures, initials, dates and anything else the sender asked for.
When every field is complete, the signer confirms with a passkey, using Face ID, a fingerprint or the device's screen lock.

That is the whole process.

Why a passkey is stronger

A passkey is a cryptographic key created and kept on the signer's own device. It never leaves the device and cannot be phished, guessed or reused on another site.

When a signer confirms, the passkey signs a statement that names the exact document, by its fingerprint. The signature is bound to that document. It cannot be copied onto another one, and anyone can check it later, in the browser, without trusting Attest.

So the easiest way to sign is also the most secure one. That is not a trade-off we had to accept. It is how passkeys are designed.

Who pays

Signers never pay and never need a crypto wallet. The sender's plan covers everything, including anchoring the agreement on Horizen once the last party signs.