Built for Australian practices
ChatGPT gets [PERSON_1]. Your client stays yours.
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Works with ChatGPT, Claude, Copilot and any other AI tool.
One tool for every place AI turns up at work: a key for any app, Chrome and Safari, your documents and ID copies.
In the middle, Nonimo shows a short line of work text with the client details swapped for placeholders. Four cards surround it: one key in any app; Chrome and Safari; documents like Word, Excel and PDF; and copies of a passport or driver licence.
Highlight a few lines in Outlook, Word or Teams, hit your key and the client turns into a placeholder.
Watch it happen →Excel, Word, PDF and other formats: the client details come out before the file reaches an AI.
Paste into ChatGPT, Claude or Gemini and it goes in covered, with the Nonimo app on Mac or Windows.
The extension →Hide the fields an agent or employer has no need for, then stamp the copy with its purpose and month.
Protect an ID copy →Nonimo trained it in-house to spot client details that don't announce themselves: a surname dropped into a sentence, a business with no Pty Ltd after it.
How it reads your text →If your business plugs its own apps into AI through an API, Nonimo Gateway covers the details on your servers before each call goes out.
Meet Nonimo Gateway →[nonimo]
Email · Outlook
Your original
Hi Bronwyn Tarkellow, invoice ref. INV-2026-0417 is attached for your records.
What the AI is handed
Hi [PERSON_1], invoice ref. [REFERENCE_1] is attached for your records.
clients.xlsx · row 14
Your original
Client: Lachlan Quistermere · Email: lachlan.q@example.com · Mobile: 0491 570 156
What the AI is handed
Client: [PERSON_1] · Email: [EMAIL_1] · Mobile: [PHONE_1]
Nonimo's own model
Your original
Rang Shelby Marrandine back about the Yarrabend Joinery quote; she wants an answer by Friday.
What the AI is handed
Rang [PERSON_1] back about the [COMPANY_1] quote; she wants an answer by Friday.
Nonimo Gateway
Your original
Write back to Tamsin Ellery-Vaux at t.elleryvaux@example.com about her strata levy query.
What the AI is handed
Write back to [PERSON_1] at [EMAIL_1] about her strata levy query.
Passport · data page
The AI never sees your dataReversibleNo cloud involved
Our own model
It reads each sentence in full, the way a colleague would, and picks up your clients' details before anything leaves the practice computer.
Can you look over the agreement between Declan Moorfoot and Ironbark Coastal Freight? His TFN is 876 543 219.
Can you look over the agreement between [PERSON_1] and [COMPANY_1]? His TFN is [TFN_1].
Not an off-the-shelf model with a new label. Our team trained it around a single task: finding client details.
It tells a person from a business by the words around them, with or without a Mr, a Ms or a Pty Ltd.
It does its work locally, so nothing you write is routed via Nonimo.
Five sample documents: your version on the left, the AI's version on the right.
See it on five sample Australian documents. Press one key on the practice computer and within a second Nonimo replaces names, TFNs, CRNs, IHIs, ABNs, super member numbers and bank details, before anything goes into ChatGPT, Claude or Copilot. The answer returns with every original detail back in place.
Recognises Australian identifiers such as TFNs, Medicare numbers and ABNs, plus people's names.
On your computer, Nonimo puts placeholders where the TFNs, Medicare numbers, client names and street addresses were, so ChatGPT, Claude and Copilot never read the originals. When the answer comes back, those details are filled in again.
| Identifier | Where you see it | What ChatGPT gets |
|---|---|---|
| Tax file number | Returns, TFN declarations, ATO letters | [TFN_1] |
| Australian Business Number | Invoices, engagement letters, trust deeds | [ABN_1] |
| Australian Company Number | ASIC extracts, contracts, company searches | [ACN_1] |
| Director ID | Consents to act, ASIC Form 484, new company registrations | [DIRECTOR_ID_1] |
| Super fund member number | Member statements, rollover requests, binding death benefit nominations | [SUPER_MEMBER_NUMBER_1] |
| Bank State Branch number | Remittance advice, direct debit forms | [BSB_1] |
| Bank account number | Bank statements, EFT authorities, settlement statements | [BANK_ACCOUNT_AU_1] |
| Medicare card number | Intake forms, referrals, claims | [MEDICARE_1] |
| Individual Healthcare Identifier | My Health Record, clinical software | [IHI_1] |
| Hospital UR number | Discharge summaries, outpatient letters, pathology requests | [UR_NUMBER_1] |
| Healthcare Provider Identifier, individual | Referrals, specialist letters | [HPI-I_1] |
| Healthcare Provider Identifier, organisation | Practice letterhead, e-referrals | [HPI-O_1] |
| NDIS number | Participant plans, service agreements, plan manager invoices | [NDIS_NUMBER_1] |
| Aged Care ID | Assessment referrals, Support at Home agreements, admission packs | [AGED_CARE_ID_1] |
| DVA file number | Veteran Card claims, allied health referrals, DVA letters | [DVA_NUMBER_1] |
| Centrelink Customer Reference Number | Services Australia letters, support applications | [CRN_1] |
| Unique Student Identifier | RTO enrolments, training records | [USI_1] |
| Title reference (volume and folio) | Contracts of sale, title searches, vendor statements | [TITLE_REFERENCE_1] |
| Strata plan number | Strata searches, levy notices, owners corporation minutes | [STRATA_PLAN_1] |
| National Metering Identifier | Power bills, hardship applications | [NMI_1] |
| Vehicle registration (rego) | Incident reports, insurance claims | [PLATE_AU_1] |
| Driver licence number | Identity checks, client onboarding, accident reports | [DRIVER_LICENCE_AU_1] |
Wherever in the world they were issued, passports and card numbers are covered as well, along with names, home addresses, emails, mobile and landline numbers, and dates of birth.
A real estate agent, a new employer or a bank wants a copy of your licence, passport or Medicare card? Nonimo covers the parts they have no use for, on your own computer, so the copy you send carries only what was asked.
Tap or click any bar to reveal the detail beneath
Sometimes nothing can be hidden. Nonimo then writes the purpose and the month across the copy, which makes it useless for anything else.
For teams
IT can put it on every desk in one go, and you can show a signed tally of what got covered.
Your IT provider pushes it to every Chrome browser in the practice with the management tools it already runs. Staff don't have to turn anything on.
Each computer keeps a count of how many details of each type it covered. Pick a date range and download a PDF that Nonimo has signed.
Nonimo has a desktop app for Mac and Windows and a browser extension for ChatGPT, Claude and Gemini. Because the extension installs through enterprise policy, your in-house IT or managed service provider can send it to the Chrome browsers on every machine from the console they normally use.
Every computer can export a usage report with a digital signature, showing how many names, ID numbers, account details and addresses were covered in a given period. It never contains the text or the details themselves. The recipient checks on nonimo.ai that the report came from Nonimo and hasn't been changed.
Running your own software that talks to AI over an API? That job belongs to Nonimo Gateway, installed on your own servers.
Four Privacy Act duties, each simpler once identifiers are gone before anyone pastes.
Because the swap happens on your computer, the AI works from placeholders instead of TFNs and client names, and your answer still comes back complete. Each of these four obligations gets simpler to satisfy as a result.
APP 6
In its 2024 guidance on commercially available AI, the OAIC walks through an insurer's staff entering customer details into a chatbot and calls that a disclosure to the chatbot's operator. The principle kicks in the moment someone pastes.
APP 8
Every big AI provider is based offshore, so handing over personal information counts as a cross-border disclosure. The usual reasonable step the OAIC expects is an enforceable contract binding the recipient to the APPs.
APP 11
A practice has to take reasonable steps to protect what it holds, then destroy or de-identify it once it's no longer needed. Chats sitting in an employee's work AI account count as information you hold.
Part IIIC
Under section 26WH, the 30 days to assess a suspected breach start once there are reasonable grounds to suspect one, not when you are sure. Serious harm is weighed against the factors set out in section 26WG.
That's a recommendation from the OAIC, not a ban. Nonimo gives a practice a workable way to follow it and keep using AI: identifiers are gone from the text before anyone hits paste. For how each chatbot stacks up, see our guide to the Privacy Act and the four main chatbots.
General information only, not legal advice. Businesses turning over $3 million a year or less may sit outside the Act, except health service providers and, since 1 July 2026, businesses handling the AML/CTF work that lawyers and accountants have now taken on.
[PHONE_1] [MEDICARE_1] [EMAIL_1] [TFN_1] [PERSON_1] [ABN_1] Each card opens a guide to one line of work: the numbers its paperwork carries, what Nonimo covers up before any AI tool sees it, and why.
Plain answers on where client details end up, what the Privacy Act asks of you, and the price.
Nonimo is Mac and Windows software that swaps client details for placeholders before a word reaches an AI. Names, TFNs and other identifiers become labels like [PERSON_1] on the practice computer, and your real details are put back when you copy the AI's reply.
Nonimo looks after client details in four spots: Excel, Word and PDF files, licence or passport copies, AI chats in Chrome and Safari, and any program. In any program, you highlight text and press a single key before pasting it into an AI.
Nonimo works in any program on Mac or Windows, from Outlook to Word to Teams. Select what you need and tap one key. In Chrome and Safari, the Nonimo extension runs inside ChatGPT, Claude and Gemini, alongside the Nonimo app.
No, Nonimo covers the text on the computer in front of you, and none of it is sent to Nonimo. After that, where the covered text goes is between you and your AI provider.
Text covered by Nonimo is pseudonymised, not anonymised. Names and numbers become labels like [PERSON_1] on your computer, and because the way back sits there too, the text isn't de-identified in Privacy Act terms.
De-identified vs pseudonymised under Australia's Privacy Act
Yes, Nonimo supports an Australian practice in meeting its Privacy Act 1988 obligations. With TFNs and client names stripped before pasting, less personal information gets to the AI provider, and that can count as one of the reasonable steps under APP 11.1.
Yes, Nonimo puts your client's details back into the AI's reply, on your computer. Select the draft, press your Nonimo key again and every placeholder such as [PERSON_1] turns back into the right name, TFN, BSB or Ahpra registration number.
Yes, the Nonimo extension works in ChatGPT, Claude and Gemini, paired with the Nonimo app on your Mac or Windows computer. Chrome users add it from the Chrome Web Store; on a Mac, the Safari version comes with the app.
Yes, Nonimo's online ID tool lets you hide the licence number, card number or signature and watermark the copy. It all happens inside your browser on your own computer, with nothing uploaded to a server and no account to create.
Nonimo's Free plan tops out at 100,000 redacted words per calendar month, with no card or login. Personal or Team scraps that ceiling at A$21.90 monthly, or A$219 if paid yearly, and Team bills that rate per person.