Angular JS ui-mask with type="password"

I am developing an app with input field, and for pattern using angular js ui-mask.

HTML

<input type="tel" class="input-field " data-ng-model="registrationField.debitcard" ui-mask="9999    9999    9999    9999" placeholder="Enter ATM/Debit Card Number"  ui-mask-placeholder ui-mask-placeholder-char="space" id="debitCardFld" ui-options="{clearOnBlur: false}"/>

1. With type="text" the code works fine.
2. But when we use type="password", on focus of the field, the spaces in pattern is also masked.

Only when the user types, it has to mask the characters.

Is there any way to achieve it?

Ref: http://ift.tt/1SlK9ax