---
id: KB-CO-016
url: https://app.codecontract.io/help/consigne/signing-from-a-phone-anywhere
idioma: en
categoria: consigne
subcategoria: firmantes
audiencia: usuario
nivel: basico
actualizado: 2026-08-13
tambienEn: [es]
relacionados: [KB-CO-006, KB-CO-005]
citadoPor: [KB-CO-003]
---

# Signing from a phone anywhere

_On a site, in a lorry or at a client's home. What you need and what you do not._

**Responde a:** signing from a phone · can you sign without a computer · signing on site without a printer · signing a document on mobile step by step

Most delayed signatures are not delayed by doubts about the document: they are delayed because the person is not at a computer when it arrives, and by the time they are, they have forgotten.

## What you need

| You need | You do not need |
| --- | --- |
| The link that was sent | To install any app |
| A connection, mobile data is fine | An account on the platform |
| To be able to read the document | A printer or scanner |
| And sometimes a verification code | A digital certificate, unless required |

> [!IMPORTANT]
> The right-hand column surprises signers most. Many people set the email aside thinking "this needs the office computer", and it does not: you open it, read it and sign with a finger.

## What the journey looks like

1. **Open the link** — It goes straight to the document, with no sign-up or password.
2. **Read it** — Worth doing properly: it is what you are signing.
3. **Verify who you are, if asked** — A code arriving separately, to prove it is you.
4. **And sign** — With a finger or by accepting; a copy and evidence remain.

> [!WARNING]
> If the document is long and complex, signing on a phone between two other things is not a good idea even though you can. The convenience of signing anywhere does not change what you are taking on by signing.

## When there is no signal

In a basement site or a warehouse with no coverage, the link will not open. What works is preparing it beforehand or signing on the way out; what does not work is going back to paper "just for today", because that paper is the one nobody scans afterwards.

**En corto**

- The link is still valid later: it is not lost by not opening it immediately.
- If it is forgotten, a reminder will arrive.
- And if the link has expired, another can be requested.

> [!NOTE]
> Signing costs the signer nothing. Consumption is on the sender's side, and a signature made on a phone is worth exactly the same as one made on a computer.

**Is a finger signature valid?**

Yes. The value comes from the evidence around it, not the stroke.

**Do I get a copy?**

Yes, when it completes.

**What if I sign by mistake?**

Tell the sender: they can void it and send again.

## Ejemplos

**A site manager takes days to sign because he only opens email at the office.**

- Opens the link from his phone on site
- Signs with a finger after reading it

→ Reports and amendments stop piling up and get signed the day they arrive.

**The signer is on site with no computer.**

- Signs from the phone's browser

→ The signature does not wait for a return to the office.

**The signer is driving and cannot stop for long.**

- Opens the link and signs during a stop

→ The process completes without travel.

**The document does not read well on a small screen.**

- Checks how it looks before sending

→ The signer reads what they sign.

**The code arrives on the same phone used to sign.**

- Signs anyway: the code works on the same device

→ No second device is needed.

**Signal is poor and the signature cuts out.**

- Retries when the connection is stable

→ The signature completes without duplicating the document.