For accountants, solicitors and GP practices in Ireland
The AI gets [PERSON_1]. You keep your client.
Start today with Free: no account, no card, set up in a minute
Works with ChatGPT, Claude, Copilot and any other AI tool.
Whether staff are in an app, a browser, a file or holding a copy of an ID, Nonimo keeps client details away from the AI.
In the middle, Nonimo shows a short client example with its details covered. Around it sit four cards: a single key in any desktop app, ChatGPT, Claude and Gemini through Chrome and Safari, Word, Excel and PDF files, and ID documents such as a passport or driving licence.
Highlight text in Outlook, Word or Teams and press your key: the client details are covered.
How the key works →Word, Excel, PDF and other formats: client details come out before the document goes to an AI.
Paired with the Nonimo app on Mac or Windows, the extension covers what staff paste in Chrome or Safari.
About the extension →Hide the fields you choose on an ID copy and stamp it with its purpose and the month.
Covering an ID →Our model catches the details a keyword search walks past: a client called by first name only, or a company dropped into the middle of a line.
Meet the model →Got applications that talk to an AI over its API? Nonimo Gateway sits on a server you control and strips the personal data from every request first.
See how the Gateway works →[nonimo]
Email · Outlook
As you typed it
Mr Eoin Ballyquarran signed the engagement letter for file ref. CL-2026-0264 today.
What reaches the AI
Mr [PERSON_1] signed the engagement letter for file ref. [REFERENCE_1] today.
debtors.xlsx · row 31
As you typed it
Client: Clodagh Drummaskeyne · Email: c.drummaskeyne@example.com · €3,450.00
What reaches the AI
Client: [PERSON_1] · Email: [EMAIL_1] · €3,450.00
Built and trained by Nonimo
As you typed it
Rang Gráinne Tullyvarren back about the Kilbrackan Precast quote; she wants an answer by Friday.
What reaches the AI
Rang [PERSON_1] back about the [COMPANY_1] quote; she wants an answer by Friday.
Nonimo Gateway
As you typed it
Write back to Pádraig Lissadorn at p.lissadorn@example.com and confirm his new payment plan.
What reaches the AI
Write back to [PERSON_1] at [EMAIL_1] and confirm his new payment plan.
Passport · data page
The AI never sees your dataReversibleNo cloud involved
Made by Nonimo
Like a careful colleague, it takes in the whole sentence and spots every client detail while the text is still on your PC.
Could you look over the lease Fionnuala Ardcrinny signed with Corrabeg Joinery Ltd? Her PPSN is 8070605K.
Could you look over the lease [PERSON_1] signed with [COMPANY_1]? Her PPSN is [PPS_NUMBER_1].
We didn’t rebadge an off-the-shelf model. Nonimo trained this one for a single purpose: finding client details.
A name is a name whether or not there’s a Mr in front of it, and a firm is still a firm without the Ltd.
The model does its work on the computer you are using. Nothing you write is routed via Nonimo.
Five Irish sample files: what you type on one side, what the AI receives on the other.
Five Irish sample files, from an accountant's ledger to an auctioneer's sale agreement. On the office PC, one keystroke swaps names, PPS numbers, Eircodes, IBANs and car registrations for placeholders in about a second, before the AI sees a thing, and all of them come back in the reply.
PPS numbers, Eircodes and other Irish identifiers are recognised out of the box, and names with them.
Before ChatGPT, Claude or Copilot get the text, Nonimo lifts out PPS numbers, Revenue and VAT references, names and addresses on the practice computer and puts placeholders in their place. When the answer comes back, each detail is slotted back in.
| Detail | Typically found in | Sent to the AI as |
|---|---|---|
| PPS number (PPSN) | Payslips, Revenue letters, social welfare forms | [PPS_NUMBER_1] |
| Tax reference number | Revenue correspondence, ROS printouts | [TAX_REFERENCE_IE_1] |
| VAT number | Invoices, VAT3 returns | [VAT_IE_1] |
| Driving licence number | Motor insurance proposal forms, car hire agreements, ID verification copies | [DRIVING_LICENCE_IE_1] |
| Sort code and account number (NSC) | Bank statements, cheques, salary payment details | [BANK_ACCOUNT_IE_1] |
| Individual Health Identifier (IHI) | HSE and hospital records | [IHI_IE_1] |
| Land Registry folio number | Contracts for sale, title searches, deeds of charge | [FOLIO_1] |
| Eircode | Client care letters, patient registration forms, contracts for sale | [EIRCODE_1] |
| MPRN (electricity meter number) | Electricity bills, BER certificates, SEAI grant applications | [MPRN_IE_1] |
| Vehicle registration (reg) | Motor claims, Garda abstract reports, NCT certificates | [PLATE_IE_1] |
| High Court record number | Pleadings, court orders, the Legal Diary | [HIGH_COURT_RECORD_1] |
| WRC adjudication reference | Adjudication decisions, hearing notices, WRC correspondence | [WRC_CASE_1] |
| Revenue CHY number | Charity letterheads, donation forms, annual reports | [CHARITY_NUMBER_IE_1] |
All of this is done on the machine at your desk. Dates of birth, IBANs, mobile numbers and email addresses are handled in exactly the same way.
Asked for a copy of your passport, passport card or driving licence? Nonimo blacks out whatever the other side has no need to see, so you can send it on without uploading it anywhere first.
Click or tap a bar to reveal what it hides
Sometimes nothing on the document can be hidden. Then Nonimo prints across the copy who it is meant for and the month, so it is of little use to anyone who tries to pass it off elsewhere.
Practice-wide
One push from IT puts it on every machine, and a report signed by Nonimo shows what it has protected.
Your IT provider installs it on the practice’s Chrome browsers through managed policy, using the tools they already rely on. Staff don’t have to do a thing.
The app counts, locally, each type of detail it has hidden. Choose a date range and download a PDF report that carries Nonimo’s signature.
Staff use the desktop app on Mac or Windows. The Chrome extension can be enforced through managed browser policy, which means whoever runs your IT, in-house or outsourced, can switch it on for the entire practice centrally.
Any machine can generate a usage report with a digital signature. It lists totals, such as how many names, account numbers, ID numbers or addresses were hidden between two dates, and it never contains the text or the details. The recipient can check on nonimo.ai that the report came from Nonimo and hasn’t been tampered with.
If your developers have built tools that send requests to an AI via its API, Nonimo Gateway covers those too, running on servers you own.
Nonimo takes identifiers out on your own computer, a safeguard that both the GDPR and the Data Protection Act 2018 name.
Nonimo takes the identifiers out of a client file on your own computer before an AI tool reads it. In law, that counts as pseudonymisation rather than anonymisation: the GDPR and the Data Protection Act 2018 still apply, and the PPS number carries extra rules of its own.
SWCA 2005, s.262
Only specified bodies, those acting for them and a handful of others are allowed to use a PPSN, and section 262(9) makes any other use an offence. AI providers are not on that list, and no Irish court has ruled yet on whether pasting the number counts as use.
Article 28 GDPR
If an AI provider processes personal data on your behalf, Article 28 requires a written agreement with specific terms. The four large providers offer one on their business plans; personal accounts usually fall outside it.
Eircode
An Eircode pins down one specific address rather than a street or a district. Leave it in a pasted passage and whoever reads it knows precisely where your client lives.
Article 33
A breach likely to put people at risk must be reported to the Commission within 72 hours. In 2025 it received 6,521 valid notifications, and almost half involved letters or emails that went to the wrong recipient.
The Commission calls this kind of processing pseudonymisation, and so do we. The identifiers come out, the key to restore them stays on your own machine, and the personal data you work with is far less exposed. Section 36(1)(e)(iv) of the 2018 Act names pseudonymisation as one of the suitable measures open to a controller. For the PPSN in depth, see what the PPS number means for AI use. Whether a particular assistant can be used under the GDPR, and what a business plan changes, is covered in our guide to the GDPR and AI tools in Ireland.
This is an overview, not legal advice. The Law Society of Ireland's AI policy template lists personal data in public AI tools as prohibited, and CCAB-I advises accountancy firms to rule it out as well.
[PHONE_1] [BIRTH_DATE_1] [PERSON_1] [EMAIL_1] [ADDRESS_1] [IBAN_1] Choose your line of work for a page on the ID numbers in its files, what Nonimo takes out before any AI sees them, and why it matters.
The questions that come first when an accountant, solicitor or GP considers AI for client or patient work, from the PPSN to the Data Protection Commission.
Nonimo is a desktop app for Mac and Windows that takes client details out of text before ChatGPT, Claude or Copilot sees it. PPS numbers, Eircodes and names turn into labels, and the originals are slotted back in once the answer is copied.
Nonimo does four jobs: text, AI chats, files and ID documents. One key covers selected text in any app; the extension covers ChatGPT, Claude and Gemini; Word, Excel and PDF files are cleaned before upload; and you can hide fields on passports or driving licences.
Your files don't go to the US through Nonimo, which never receives them: the redacting happens on your own computer. What's left goes to your AI provider, and where it ends up from there is down to that provider and your agreement with it.
Yes, a PPS number counts as personal data. One number tied to one person is what the GDPR means by an identifier, and Irish law limits who may use it under section 262 of the Social Welfare Consolidation Act 2005.
Nonimo is pseudonymisation, not anonymisation. Names and IBANs become placeholders such as [PERSON_1], and the real details are restored in the reply. With the key on your machine, the text you send is still personal data in your hands under the GDPR.
Yes, Nonimo can help an Irish practice with its GDPR obligations. The GDPR lists pseudonymisation as a measure in Articles 25 and 32(1)(a), but the practice still needs a lawful basis, an Article 28 agreement with the AI provider and a record of processing.
Nonimo works with both Copilot and ChatGPT, and with Claude and Gemini too. It redacts the text on your own PC before you paste it, so the practice can keep whichever assistant it already pays for.
Yes, Nonimo has a browser extension for ChatGPT, Claude and Gemini, which works with the app on your Mac or Windows PC. Chrome users get it from the Chrome Web Store; Safari users already have it in the Mac version of the app.
Use Nonimo's online ID tool to cover the details and watermark the copy, from a phone photo or PDF scan. Choose what to blank out and, should you wish, add a line across the page. The tool does its work inside your browser.
Nonimo's Free plan handles 100,000 words of redaction a month, no card or account required. Personal or Team takes away the cap at €14.90 a month (€149 paid yearly), and Team bills each member at that rate.