Made for the doorstep, not the desk.
There's no app to install or update. 1 Sign runs in the browser on whatever your engineers already carry — iPhone, Android, tablet — and it's designed for the doorstep: quick forms, big buttons, clean signature capture.
No app, no updates
Open the link, log in, sign off. Works on any modern phone, tablet or laptop browser from day one.
See how it worksCamera built in
Before & after photos come straight from the device camera, checked to be taken during the job.
Before & after photosFast on site
Light pages and simple forms — a complete sign-off with signature and photos takes a couple of minutes.
Capture signaturesMobile-first, done properly
Field tools fail when they're built for desks. 1 Sign is designed mobile-first: every form, table and dashboard reshapes for a phone screen, and the things engineers do most — fill the sheet, take photos, capture the signature — sit front and centre.
Because it's the web rather than an app store, your whole team is always on the same version, new engineers are working within minutes of their invite, and there's nothing to install on customer devices — they just sign.
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.