Automation prevention
External paste, blocked or marked.
Auto-typing, rolled back.
Block pasting from outside MATCHA, or allow it and irreversibly mark all externally pasted text. Automated text entry, such as from auto-typers, is rolled back, and critical checks run on a remote server rather than only on the student’s computer. For in-person exams, Locked-Down Mode enforces fullscreen and blocks switching to other apps.
Explore the features
In practice
Different rules for home and the exam room.
For a take-home paper, you might allow external paste in Mark mode, so anything pasted from outside MATCHA stays irreversibly marked. For an in-class exam, block it entirely and add Locked-Down Mode, with a proctor in the room. Either way, students can still copy from readings in the built-in browser, and the pasted text stays linked to its source.
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Decide what students can bring in
Block external paste entirely, or allow it and irreversibly mark everything pasted from outside MATCHA. Internal copy-pasting is always allowed and never marked. Text copied from readings in the built-in browser is allowed too; it keeps a link to its source and is counted separately in the writing analysis.
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Make the record tamper-proof
Critical control code runs on a remote server, not only on the student’s computer, which prevents compromised local software from forging edits. Automated text entry is rolled back, and virtual machines are prevented. Text entry protection currently covers Latin letters only.
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Lock down in-person exams
Locked-Down Mode keeps MATCHA fullscreen. If other software appears above it or on another monitor, MATCHA locks until a proctor scans the QR code on the student’s screen.
In detail
How each feature works.
What each feature does, its options, and what it requires.
Copy‑Paste Control or Block
- MATCHA prevents unwanted copy-pasting from external sources such as AI assistants.
- In Block mode, copy-pasting from external sources is not allowed at all.
- In Mark mode, copy-pasting is allowed but all text pasted from external sources is irreversibly marked.
- Internal copy-pasting is always allowed and never marked.
- MATCHA has strong protections against all techniques to inject AI-generated text (for example, auto-typers and virtual-machine-based methods).
Remote Typing Certification
- Examination software on the participant's computer can be compromised through widely available methods.
- MATCHA protects against these forms of evasion by locating critical control code within a remote server instead of trusting only the local device.
- This includes code that cryptographically certifies the timing of all document-altering events, using patent-pending technology to create a tamper-proof record of a document's evolution in time (U.S. patent application 64/060,717).
Automation Detection
- MATCHA prevents the use of automation to simulate human writing or reading. This works both in the editor and the browser.
- Automated text entry is automatically rolled back. Automated browsing is marked as automated in the history and not counted toward reading statistics.
- MATCHA also prevents the use of virtual machines and other forms of virtualization.
- Text entry protection is currently only available for Latin letters. Broader protection will be released early 2027.
Locked-Down Mode
- This feature enforces fullscreen usage and blocks switching to other apps while a writing activity is in progress.
- This feature is intended to be used for in-person activities.
- MATCHA detects any software that makes itself available above it or on a different monitor.
- In case a Locked-Down Mode violation is detected (say, if an application on a timer appears above MATCHA during an exam), MATCHA locks up. A proctor needs to intervene, scanning the QR code on the student's screen to unlock MATCHA if they judge that the student should be allowed to continue.
- MATCHA is the only real word processor with Locked-Down Mode!