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Legalario 99% E-Signature Completion

Product design for Legalario's electronic signature platform. Achieved 99% completion rate, +24% NPS, 4 biometric models and iBeta.

Cliente
Legalario
Industria
LegalTech / Fraud — SaaS
Tiempo
6 months
Impacto
99% completion rate
Legalario mobile e-signature success screen on iPhone — legally valid electronic signature captured end-to-end with biometric face scan, held in-hand by a Mexican SMB operator closing a contract outside the office, the redesigned LegalTech flow that replaced print-and-scan notarised paper across LATAM

Sign documents electronically with legal validity on any device. Our goal is to democratize legally valid electronic signatures: accessible to everyone, on any device.

Reto

Improving an existing product

Properly defining the problem was tricky. We focused on the following question: How will we know that we are creating value? As a general rule, any document signed with Legalario is legally valid.

I want to grow as Legalario

Resultados

  • 99% completion rate.
  • +24% in our NPS.
  • 4 new biometric models implemented.
  • iBeta Certification.

El equipo

  • 5 developers
  • 1 product designer by Comandos
  • 1 Customer Experience
Aventura

Defining the top 3 challenges considering business and user experience

Legalario user research — 25+ conversations with customers and users around electronic signing

After 25+ conversations with customers and users.

  1. 01

    Support low-end devices

    Currently, support is optimized for mid-range and high-end phones.

  2. 02

    Signing documents with low risk of fraud

    Implementing biometric models with AI-powered anti-fraud support.

  3. 03

    Anyone can understand how to sign a document without outside help.

Seeing the mountain

We identify problems by segment

First, we analyze the entire current user experience.

Legalario legacy flow — identity recognition in process screen
Legalario legacy e-signature flow — draw-your-signature step inside a cramped finger-stroke rectangle on mobile, the pre-redesign UX that confused Mexican SMB signers and leaked drop-off before the Comandos rebuild
Legalario legacy e-signature flow — contract preview rendered inside a zoomed-out browser frame on a phone, the low-confidence final review step Mexican signers had to accept before the new design moved it to a full-screen reader with biometric confirmation

Net Promoter Score

  • Indicated that their low-end phones do not have support.57%

  • Rate the document signing service with 3 stars.26%

  • Do not understand how to start signing from the invitation email.10%

Interview with users

  • I don't feel comfortable signing any documents.
  • Is it legal to sign documents electronically?
  • I have large-scale hiring processes. How can I protect myself against identity fraud?

We redesigned everything FROM SCRATCH based on feedback from our users.

We took the opportunity to define a more modern, browser-oriented technology stack and move away from legacy architectures.

Legalario redesigned v1 — contract preview and identity capture on mobile
Legalario redesigned v1 — facial biometrics and handwritten signature on mobile

Testing the entire product before the first deployment

End-to-end testing — desktop identity picker and 30+ facial recognition models with fraud detection
Face-mesh biometric validation — profile view with face-scan overlay on a phone
Making top

We take all the insights and create something unique.

We support several complementary use cases with new biometric validations based on artificial intelligence.

Signed Document

Signed document, first version — legacy completion screen: an 'Importante' note and a grey '¡Tu proceso de firma está completo!' box above the document preview
Signed document, new version — green success banner 'Has firmado tus documentos correctamente', a Legalario product card and the signed contract below
Drag to compare

Biometric Verification

Biometric verification, first version — basic camera step with a stepper bar and a plain face oval over the live selfie
Biometric verification, new version — guided face framing with an 'Ajusta tu cara aquí' prompt and a progress ring around the selfie oval
Drag to compare

Instructions for signing documents

Signing instructions, first version — dense text screen 'Información sobre la captura de la identificación' with three small rules for the ID photo
Signing instructions, new version — illustrated identity capture: a photo of a person photographing their ID and the line 'Toma la foto del frente de tu identificación'
Drag to compare

We implement Passive Life Detection.

Only body movements are necessary.

  1. Passive life detection, step 1 — selfie oval with the prompt 'Ajusta tu cara dentro de la silueta'

    01 Fit your face inside the silhouette

  2. Passive life detection, step 2 — selfie oval with the prompt 'Mantén esta posición' and the progress ring advancing

    02 Hold this position

  3. Passive life detection, step 3 — selfie oval with the prompt 'Acércate más'

    03 Move closer

  4. Passive life detection, step 4 — face closer to the camera, prompt 'Mantén esta posición'

    04 Hold this position

Proof of Life: Text to Speech

  1. Proof of life with text-to-speech, step 1 — selfie oval with the prompt 'Presiona el botón y sigue las instrucciones' and a record button

    01 Press the button and follow the instructions

  2. Proof of life with text-to-speech, step 2 — recording: 'Lee fuerte y claro' and the phrase 'Hola soy María Guzmán' with a 00:10 timer

    02 Read the phrase aloud

  3. Proof of life with text-to-speech, step 3 — the same phrase on screen with a blue ring and a 'Procesando' button

    03 Processing

New service implemented.

We achieved in six months what seemed impossible.

99%
completion rate
+24%
in our NPS
+31%
signed documents

  • 4 new biometric models

    Implemented with AI-powered anti-fraud support.

  • iBeta certification

    To verify the authenticity of the person signing the document.

Trabaja con nosotros

Crece como Legalario

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