Your jobs are nobody else's business.
Every customer, job, signature and photo in 1 Sign is isolated to your company account. Other businesses can't see your records, and neither can anyone without a login you issued.
Tenant isolation
Your records live under your account and are checked against it on every single request — not just hidden from view.
Common questionsFiles behind the login
PDFs, signatures and job photos are never public URLs. They're served only to authenticated users of your account.
Branded PDF certificatesHardened logins
Rate-limited sign-ins, hashed tokens, and one active session per account — a shared password simply stops working.
Manage your engineersPrivate & secure, done properly
Proof of work is only worth something if it can't be tampered with or wandered off with. Sign-off records in 1 Sign are write-once — editing a sheet layout later never changes what was captured on the day — and every certificate carries a unique reference.
Security isn't a tier or an add-on: every account gets the same isolation, encrypted transport, and locked-down file storage, from free trial to the biggest team.
No card required · works on any phone or tablet · already use 1 Sign? Log in
More of 1 Sign
Everything works together — signature to certificate in one flow.