Make sure each INPUT field has an associated LABEL describing the field.
Usability.gov 13:5
<input name="password" id="input_8up4b4r1" type="password" value="password" class="invitation" />
<input name="password" id="input_8up4b4r1" type="password" value="password" class="invitation" />
Read my reply here: http://www.oxwall.org/forum/topic/45804
regarding people with reduced capabilities.