(<code>mc</code> parameter), and a signature (crypto-hash) of the request created using merchant's private key.</p>
<p>However; various applications have been accepting requests without merchant details and signature and successfully processing payments. Possibly, the dilution could be due to the reason that such a package can only automate filling a payment form, and unless the user verifies the details in the form and enters the UPI pin, no damaging payments can be really made.</p>
<p>Over last few months