Why does the on screen keyboard doesn't work on password field, but my physical keyboard works?

How will I able to automate this field or input a text not using a physical keyboard?

<object width="200" height="24" id="safeEdit1" classid="CLSID:73E4740C-08EB-4133-896B-8D0A7C9EE3CD" codebase="/icbc/newperbank/AxSafeControls.cab#version=1,0,0,30" style="vertical-align: middle;" onkeyup="getfocus1('verifyCodeCn', event);" onfocus="clearErrTip();detectCapsLock('logonform','safeEdit1',670,140,400,'logontb')" onblur="closeCapTip('logonform','safeEdit1')"><PARAM NAME="_cx" VALUE="5292"><PARAM NAME="_cy" VALUE="635">
<param name="name" value="logonCardPass">
<param name="minLength" value="4">
<param name="maxLength" value="30">
<param name="rule" value="10111">
<param name="UniqueID" value="1577983525102276921">
<param name="IsPassword" value="true">
<param name="prompttext" value="登录密码">
<param name="prompttextcolor" value="102,102,102">
<param name="backgroundcolor" value="255,255,255">
<param name="isbordervisible" value="0">
<param name="CryptAlg" value="2">
<param name="ruleName" value="ruleName">
<param name="changeRuleName" value="changeRuleName">
</object>

I am using selenium, I also used InputSimulator but it doesn't work.

I am using this on Internet Explorer 10