Nonimo

Nonimo is a data masking tool that lets professionals use AI assistants without exposing their clients' personal data. Before text goes to ChatGPT, Claude, Gemini, or Copilot, Nonimo replaces names, ID numbers, International Bank Account Numbers (IBANs), email addresses, and case or invoice references with placeholders such as [PERSON_1] or [REFERENCE_1]. When the answer comes back, the original details are restored on the user's own screen, so the AI assistant receives only the placeholders and the user does not have to edit a draft by hand. The vendor states that the masking runs on the user's own computer.