How do I limit character count on an authenticator?

Question

Participants received a ten-digit number to enter in an authenticator. Unbeknownst to them, a cut and paste added a space and invalidated the login. Is there a way to limit the number of characters in the authentication box?

AnthonyR · Accepted Answer

I don't think that there is any way to limit this unfortunately. Perhaps, it is worth adding a warning to users that this may be a problem. Definitely worth a feature request!

CamM · Answer

Hi JulieT, I came across your post courtesy of some recent work I've been doing with Authenticators whereby I was trying to restrict the character length of a given Authenticator field. Appreciate that this is an old post, but I wanted to flag that your requirements are actually possible to achieve by -:Navigate to the Look and Feel screenUnder the "General" tab, edit the Header and switch to the Source viewEnter the following script...Qualtrics.SurveyEngine.addOnload(function(){jQuery('td.ControlContainer>input').eq(0).attr("maxlength",10);});In the example above, the "0" in .eq(0)relates to the first Authenticator field, so if you have 2 or more, you can explicitly reference them by updating to .eq(1) or .eq(2) etc. You can also substitute "10" for whatever length value is appropriate .attr("maxlength",10) section of the code.Cheers,Cameron

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