Phishing and stolen identity
Who's really writing you, who's really signing? Without proof: a gamble.
For you
You sell your car. You rent out your flat. You let someone pick something up. Who do you really trust?
Identity, authorizations, checks – all in one app. Sell a car with proof, give power of attorney to family, hand over a verified rental profile. Everything signable, everything revocable – confirmed with fingerprint or Face ID.
First 50 checks/month free · GDPR · Made in Germany · Proof per action
Compliance & hosting
What this is about
‘Hi, I'm calling from your bank.' – Real or fake?
You end up in situations without an easy proof. Who's really calling, who's really the buyer, who's really allowed to decide for you? SigID closes the gap – without a new ID-card reader.
Paper authorizations
An authorization for your tax advisor or family sits unchecked in the drawer. Who controls it?
Private car sale
The buyer wants proof, you do too. Cash in a parking lot is no longer a 2026 solution.
How SigID helps
One app. Identity, authorization, proof.
You stay in control. The other side gets the proof.
Get the Trust App
Free. Set up your identity with a passkey – optional with the eID card for extra security.
Give authorization
For family, tax advisor or lawyer – time-bounded, revocable any time with one tap.
Confirm via QR
Buyer, landlord or authority scans – sees only what's needed. Nothing more.
Keep the proof
Every signed action gets an Audit-ID. If there's a dispute: verifiable any time.
What it looks like in real life
Real stories from your everyday life.
You sell your car.
“Buyer and you both confirm in the Trust App. Identity, vehicle papers, price – all anchored in the proof. Trust without a notary.”
Example scenario · Private person, one-off sale
- for both sides
- Proof
- of vehicle papers
- Fingerprint
Example scenarios from the finished module. We're just getting started – be there when the first trust stories happen.
FAQ for individuals
What you'll be asking.
What does SigID cost me?
The Trust App is always free. Private and business get the same: 50 checks per month on us. If you check more, you pay per action from check 51 – no packages, no minimum contract.Do I need a new ID card?
No. You can optionally add your eID card for extra security – but you don't have to. A passkey alone is enough for most things.Where is my data?
In the EU, on our servers. What's really sensitive is encrypted – we can't read it without your confirmation either.What if I lose my phone?
You bring the Trust App back on a new device – with a combo of email, passkey and (optionally) eID. No quick reset links by email.Does it work if the other side doesn't have SigID?
Yes. The answer comes as a web link – anyone with a smartphone can check. To sign yourself, you have to grab the Trust App once.
Your identity. Your control.
Get the Trust App for free. First authorization in under 3 minutes.
- DSGVO-konform
- eIDAS-bereit
- Made in Germany