CAPTCHA or Completely Automated Public Turing test to tell Computers and Humans Apart is a type of challenge-response test used in computing to determine whether or not the user is human. It is designed to prevent automated bot activities.
In general, automating CAPTCHA solving is considered as a violation of the terms of service of most online services. CAPTCHAs are specifically designed to be difficult for computers to solve, in order to prevent automation of tasks which are otherwise intended to be performed by humans.
Also, there are ethical concerns regarding the automation of CAPTCHA solving as it can lead to abuse and exploitation of web services that rely on CAPTCHAs for security purposes.
However, for the sake of discussion, there are few workarounds to automate CAPTCHA solving for testing purposes or academic research.
- Third-party CAPTCHA solving services: Services like 2captcha, AntiCaptcha, and DeathByCaptcha offer APIs that allow you to send them a CAPTCHA image which they will solve and send back the solution. Keep in mind that these services are not free and are often used by spammers.
Here's an example of how you might use the DeathByCaptcha service with Playwright:
from playwright.sync_api import sync_playwright
import deathbycaptcha
def run(playwright):
browser = playwright.chromium.launch()
page = browser.new_page()
page.goto("http://www.example.com/captcha")
# Take a screenshot of the CAPTCHA
page.screenshot(path="captcha.png", clip={ "x": x, "y": y, "width": width, "height": height }) # replace x, y, width, height with actual values
# Use DeathByCaptcha to solve the CAPTCHA
client = deathbycaptcha.SocketClient("username", "password") # replace with your DeathByCaptcha username and password
captcha = client.decode("captcha.png")
# Fill in the CAPTCHA solution
page.fill("#captcha_field", captcha["text"]) # replace #captcha_field with the actual selector
# Continue with your automation script
# ...
browser.close()
with sync_playwright() as p:
run(p)
Machine Learning: Some researchers use Machine Learning to break CAPTCHAs. This is a much more complex solution and requires a good understanding of machine learning principles and techniques.
Bypass the CAPTCHA for testing environments: The best way to handle CAPTCHAs while testing is to ask the website owner to disable CAPTCHAs for the testing environment or to use a static CAPTCHA that you already know the answer to.