Implement accessible captchas

[luistoptal]

User story

The site has some captchas, e.g. http://gigadb.gigasciencejournal.com:9170/site/contact

these are not fully accessible

• review options to implement accessible captcha: https://www.w3.org/TR/turingtest/#:~:text=CAPTCHAs%20are%2C%20consequently%2C%20allowed%20under,sensory%20perception%20are%20provided%20to

Acceptance criteria

• Captcha is accessible

[luistoptal]

There is one captcha in the site (contact form)

After spending some time researching this, there is simply no ideal accessible solution to captchas. The closest might be:

• Alternative audio captcha: easy for bots to bypass, can be hard for users to understand the audio
• google reCaptcha v3: does not need direct user interaction but requires integrating with google

Neither of these are an ideal solution. So the simplest solution is to just provide alternative contact channels, and these are already present as contact email and phone number, therefore I'm closing this issue