To make the passcode a bit trickier to fetch properly by robots we can also write it with some html tags inside (or affecting half the passcode). E.g.:
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foo<i>bar</i>
instead of just
or
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<i>foobar</i>
This way, the user will read the same word that they have to type in: foobar
, but robots will potentially read the html code, with the italic html tags in between, etc.