From: Human-artificial intelligence approaches for secure analysis in CAPTCHA codes
CAPTCHA | Illustration | Challenge | Feature |
---|---|---|---|
BeCAPTCHA-Mouse [58] |
| Select all images in term of description | Grids, user mouse tracking, image selection, semantic |
Gametrics [59] |
| Drag a subset of the moving objects to their corresponding static targets | Limited image database, human craft, semantic, image drag |
GEETest |
| Slide the slider until two puzzle pieces match | Multi layers, background, noise, one puzzle piece and one missing puzzle piece, image slide |
Netease [6] |
| Slide the slider until two puzzle pieces match | Multi layers, background, noise, one puzzle piece and one missing puzzle piece, image slide |
EYE-CAPTCHA [60] |
| The user finds the answer to a simple math operation displayed on the screen and moves it to the center with his eyes | Moving objects by eye, colorful, background, noise, math-based |
No CAPTCHA reCAPTCHA |
| Click on I’m not a robot Checkbox | User tracking |
Invisible reCAPTCHA |
| There is no visible challenge; it is triggered by a Javascript API or by the user clicking on an existing button on the website | User tracking |
CAPPCHA [61] |
| Tilt the device in a specific direction | Mobile devices, tilting devices |
Sensor CAPTCHA [62] | Â | Do gestures like hammering, fishing, and turning the body while holding the mobile device | Mobile devices, simulating gestures with devices |
Pedometric CAPTCHA [63] |
| Take at least five steps | Mobile devices, simulating gestures with devices |
Invisible CAPPCHA [66] | Â | No action is required | User tracking |
AccCAPTCHA [67] |
| Play a simple rolling ball game or another popular game | Game, mobile devices |
GISCHA [68] |
| Play a simple game in which you move a ball to a hole with a specific shape | Game, mobile devices |
SenCAPTCHA [70] |
| Determine the animal's eye position, then tilt the device to move the ball there | Mobile devices, tilting devices |
BrightPass [71] | Â | In terms of screen brightness, enter a correct PIN digit or a deceptive lie digit | Screen brightness cognition |