Real estate

Qualified electronic signatures for rental agreements

The wallet carries all three. Identity attributes verify the applicant, employment and income attestations come signed by whoever actually knows, and the same wallet produces a qualified electronic signature, which under eIDAS has the legal effect of a handwritten one across the EU.

The problem

What teams do today

Letting a property remotely breaks into three awkward pieces. Confirm the applicant is who they claim. Confirm they can afford it. Get a signature that holds up. Landlords collect payslip PDFs anyone could edit, chase employment letters, then either accept a weak click-to-sign or book an appointment.

01
Identity, affordability and signature in one flow instead of three tools
02
Income evidence nobody can edit in a PDF viewer
03
A signature with EU-wide legal equivalence to wet ink
How it works

Three steps with Authbound

  1. Step 01

    Verify the applicant

    Request identity and address attributes so you know who you are dealing with before sharing property details.

  2. Step 02

    Check affordability

    Employment status and income attestations arrive signed by the issuer, so the edited-payslip problem goes away.

  3. Step 03

    Sign with QES

    The tenant signs from the same wallet, and the signature carries the identity binding with it.

Rules in play

eIDAS 2.0 qualified electronic signature, national tenancy law

Live demo

We built Keystone, a company that does not exist, to show this running inside a finished product. The wallet flow in it is the real SDK.

Open the Keystone demo
Questions

What people ask

How is QES different from normal e-signing?
A qualified signature uses a qualified creation device and a certificate tied to a verified identity, and under eIDAS it has the same legal effect as handwriting everywhere in the EU. Most click-to-sign products produce advanced or simple signatures, which a court weighs as evidence rather than accepting outright.
How does income get attested?
As an attestation from a source that already knows: an employer, a payroll provider, or a tax authority depending on the member state. You verify the issuer instead of interpreting a document.
Does the tenant need special hardware?
No. The wallet on their phone acts as the signing environment, which is the change that finally makes remote QES workable at consumer scale.

Built on Authbound Digital Signatures. One API key covers every flow you add later.