Some browsers (iOS) recognize the specific pattern
attribute value of [0-9]*
as triggering numeric keypad.
The HTML 5.1 draft contains the inputmode
attribute, which has been designed to address the specific issue of input mode (like key pad) selection, but it has not been implemented yet.
You could use it for the future, though – even though the current HTML 5.1 does not allow it for type=password
, for some odd reason.
<input type="password" pattern="[0-9]*" inputmode="numeric">
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