Website x5 captcha 
Autor: Amelie H.
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Website X5 Captcha is not user friendly especially for those who have visual impairment. Would you please consider producing Website X5 Captcha that is easy to read (larger /darker / and straight images of letters). Thank you.
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Autor
For example those highlighted letters are not easy to figure them out ... although my sight is OK
Hello. I sent a notification about your suggestion to the company employees, expect an answer from them here in the comments.
I also suggest that you use RECAPTCHA for now.
Autor
Thank you for the moderation. Actually, I do not prefer using RECAPTCHA. Thank you :)
You also have the option of the check question on the form. Here you could ask any question (like what is two plus three) but I use it to ask what the word below is. I insert the word as a background image in step 4 object style (I used to use a coloured ball image, but found out there are many people who are colour blind :-).
Here you will see an example on my website
https://www.esahc.com/index.php#Contact