Knowing that it would be easy for anyone to feign a love of heavy metal music, HeavyGifts set up a unique web captcha to have people prove that they are indeed metal fans and not robots online.
The 'MetalCaptcha' features the names of heavy metal bands in a hard-to-read script, which puts fans to the test in order to prove themselves worthy of proceeding with an online action.
As well as being a fun way for HeavyGifts to brand even the spam-blocking captcha tool on its site, the MetaCaptcha is available to anyone who wishes to embed it and challenge web visitors to prove themselves. What's more is that metal bands can submit a black and white file online to have their own band logo featured in the unique web captcha.
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