The conceit of Humans Not Invited is essentially a reverse CAPTCHA. Visitors to the site are greeted with a vision test not unlike the ones you’ve done before, but instead it’s filled with seemingly indistinguishable blue and gray blurry boxes. When I tried, I was prompted to “select all squares with selfie sticks.”
Most humans, like me, will fail to decipher the hidden selfie sticks and will be shown a message that says “YOU’RE A HUMAN. YOU’RE NOT INVITED.”
To the human eye these boxes appear indistinguishable, a specially programmed bot can spot out the correct image simply by identifying a handful of pixels, according to the project’s creator, Damjanski, (his real name is Danjan Pita).
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.