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Lucid SigningSino Ai

How Sino Ai powers Lucid Signing.

The reading tools inside Lucid Signing run on Sino Ai. Highlight a clause and have it explained in plain English, define a term, translate a passage or summarise a section - before you sign it, not after.

About Sino Ai

Sino Ai is an AI product built for everyday work - reading, drafting, summarising and the hundred small tasks that sit between a person and the thing they are actually trying to do. It sits in the same family of products as Lucid Signing, which is how it came to be wired into the signing page early.

Most people sign documents they have not fully read, not out of carelessness but because a lease or a supplier agreement is written for lawyers and arrives on a phone. The reading tools exist to close that gap at the moment it matters: while the document is open and the signature has not yet been placed.

Inside Lucid Signing

  • Explain a clause in plain English
  • Define a word or a term
  • Translate a passage
  • Summarise a section
  • Scan a passage for the terms that matter

Start to finish

How it runs on the signing page.

  1. 01

    A signer highlights what they do not understand

    On the signing page, selecting a passage brings up the reading tools. The signer chooses what they need - a definition, a plain-English explanation, a translation or a summary - and asks in their own words if they want to.

  2. 02

    Only the highlighted text goes to Sino Ai

    The selection is what is sent: a fragment of text, never the whole document, never the file, and nothing about who is signing it. A signing product's whole value is that people trust it with contracts, and that cap is the technical form of the promise.

  3. 03

    Sino Ai answers in the language they chose

    The clause comes back explained, the term defined, or the passage translated into one of the supported languages. It reads as an explanation of the words on the page, not as legal advice, and it says so.

  4. 04

    The signer decides, then signs

    Nothing is changed in the document and nothing is added to the audit trail by reading. What the signer does next - sign, ask the sender a question, or decline - is theirs to decide with the text understood.

In playReading toolsPlain-English explanationsDefinitionsTranslationSummariesFragment-only privacyEvery feature →

What it changed

The parts signers notice.

Read before signed

The clause that used to get skipped because it was dense gets understood because it was explained. Signers ask fewer questions after the fact, and senders field fewer of them.

Signed in the signer's language

A document drafted in English can be understood by someone who reads more comfortably in another of South Africa's languages, without the sender producing a translated copy.

Nothing leaves that should not

The reading tools are the only place in the product that calls a model, and they see a highlighted fragment at most. Documents, files and signer identities stay where they are.

Try the reading tools on your next document.

Upload a PDF, send it to yourself, and highlight the clause you would normally skip. Free for three documents a month.

Start signing free