Signed on site. Verifiable from the office.
The customer signs the project confirmation on a phone or tablet: address, occupant, start and description of the job. Your own documents too: privacy notice, tenant information, permission to enter. Krahasso produces a PDF and records who signed, when, and with which checksum. Also which of your people was present.
- Project confirmation and your own documents, signed on site
- SHA-256 checksum of the signed PDF, recomputable from the office
- The signatory receives their copy as an email attachment
30-day money-back guarantee. No credit card.
- Signatory
- B. Bauer (client)
- Signed at
- 28.09.2026, 16:12
- Checksum
- sha256:4f2a9c… e81d
Sign it. Record it. Check it later.
On site the project confirmation shows on the device and is signed. Krahasso creates a PDF and stores the checksum alongside it. If they want one, the signatory gets their copy. Back in the office you recompute it and see the document is still the same one. That holds for the project confirmation and for your own documents.
Signed with a finger. On a phone or tablet.
The customer sees the document on the device and signs with a finger. Name and role sit underneath, from tenant through property manager to loss adjuster. The signature is stored in the app first and uploaded afterwards. So your technician carries on in a basement with no signal. The document itself is fetched beforehand, while there is still a connection.
Written once. Filled in on every job.
Privacy notice. Tenant information. Permission to enter. You write your wording once in the office. On the job, tenant, address and project number are already in it. Your technician asks for none of it again on site. No carbon copy left behind in the van. They show the document, the customer reads and signs. The first signature fixes the text. Later changes to your template leave signed copies alone.
Not everything needs a signature. It still needs a record.
Some documents only inform. For each one you choose: sign, confirm receipt, or send only. It goes out as a PDF by email, straight from the job. Krahasso records which address it went to, and when. If the client asks later, you show the send.
Samples to start from. The wording stays yours.
Krahasso ships samples for the usual documents. You adopt one as a draft and fill the marked gaps. Only a released document can be assigned to a job. So no half-finished text reaches a tenant. The samples are a starting point and not legal advice. What your business has people sign is your business's call.
Time, name, checksum. And who was there.
The timestamp from the device. The signatory's name and role. The member of your team who was present. A SHA-256 checksum of the signed PDF. From the office the checksum is recomputed and compared with the stored one. Where several people sign the same document, they all carry the same content checksum. If the property manager asks later, it is all there. In legal terms this is a simple electronic signature under eIDAS, not a certificate and not a qualified signature.
The signatory gets their copy. From your business.
If the signatory leaves an email address, the signed PDF goes straight to them as an attachment. Ready to file or forward. It comes from your business, and replies come back to you. Everyone involved holds the same version.
Signed by mistake. Revoked with a reason.
A signature taken in error is revoked with a reason. The reason is mandatory and is kept with the name and time of the revocation. Both the signature and the revocation stay in the record. A handover that stands is an invoice that goes out.
See it on a job of your own.
A short call where we walk through your actual workflow and show what it looks like in Krahasso.
Hosted in Germany
Servers and backups sit in German data centres. Processing under Art. 28 GDPR, with the DPA included.
E-invoicing to EN 16931
With the Commerce module: every invoice as XRechnung or ZUGFeRD, mandatory fields checked before it goes out.
Backed up daily
Backups at a second German data-centre site, kept for 31 days.
Your data stays yours
Projects, receipts and documents export to file whenever you want, including on your way to someone else.
More in Closeout
Musterstraße 5, Berlin
Reports
Leak detection. Drying. Floorplan. Three reports as PDFs, from the data already in the project.
- Supplier
- Baustoffe Meyer GmbH
- Date
- 14.09.2026
- Net
- 842,02 €
- VAT 19 %
- 159,98 €
Receipts, tax & DATEV
Have receipts read out. Figures for UStVA, EÜR and the EC Sales List. Hand a period over as a DATEV posting batch.
Your first job. Set up together.
We set up your warehouse and your first project with you. On the call we work out which modules fit your business. Every number that is right on site is right in the report.
30-day money-back guarantee. No credit card.