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<http://schema.org/text>
"The Z Pin is the 4-digit telephone code. This is the customer&#x2019;s personal identification number. This number is required to place orders through the call, trade desk and to raise support requests. &#xD;&#xA;Whenever the customer will call Zerodha customer support or call &amp; trade desk, he/she have to authenticate themselves using the Z Pin code. &#xD;&#xA;"
<https://www.garvthakur.com/Broker/Zerodha/Mobile-App-8>