The search giant mostly known for bringing new things everytime – this time seems to be working on CAPTCHAs – Yes I mentioned CAPTCHA – Google instead of offering blurry words or regular jumbled words, the ReCAPTCHA boxes are started showing users a real image along with jumbled word. The image contains a legible but perhaps difficult to scan (via OCR) address sign or street sign from Google StreetView. When a visitor sees the street sign and identifies it, Google pops this information back into StreetView. Google confirmed to TechCrunch that the new ReCAPTCHAs are part of a new experiment it’s conducting.
We’re currently running an experiment in which characters from Street View images are appearing in CAPTCHAs. We often extract data such as street names and traffic signs from Street View imagery to improve Google Maps with useful information like business addresses and locations. Based on the data and results of these reCaptcha tests, we’ll determine if using imagery might also be an effective way to further refine our tools for fighting machine and bot-related abuse online.
A larger collection of these images also recently appeared on the Blackhatworld forums: