reCAPTCHA: book digitisation
Mechanism and classification
Security challenge and word reading → digitised text. Interpret this mechanism at the stated maturity level. A launch, demonstration or reference blueprint does not establish widespread operation or commercial success.
Editorial scope
The status describes the documented stage of the model; it is not a claim of market penetration or commercial success. Provider metrics remain provider claims unless independently confirmed.
Evidence
- Source 1 · eurekalert.org ↗Event / published: 24.05.2007
- Source 2 · independence must be assessed separately · cs.cmu.edu ↗Published: 12.09.2008
Complete research dossier
The complete editorial record — including the case-specific mechanism, chronology, limitations and cross-references — is maintained in German. Use the DE switch to open the exact counterpart.
Dates and evidence scope
- Recorded event / reference date
- 2007
- Atlas first publication
- Not separately established
- Source review in this audit
- Not separately established
The editorial update date is not a claim that every source or current product feature was rechecked. Unknown dates remain open. Source publication dates are listed with the evidence above.
Structured evidence and geography register · Unclassified source roles and unassigned origin/market fields are explicitly marked.