How to use Non-Renewable Subscriptions in multiple devices?
<p>I'm implementing an application with Non-Renewal Subscriptions. For that i have referred many sites and most of the answers that i found as like,</p>

<ul>
<li>We need to manage the expire date by ourself in our server side/local, once you verify a receipt with Apple.</li>
<li>We can implement authentication module as optional to share use the Non-Renewal Subscriptions across multiple devices.</li>
</ul>

<p>Actually my application doesn't have authentication modules like registration/login to track user on multiple devices. So How can i able to use the Non-Renewable in multiple devices without allowing user to register/login. Do we have any common field to trace the user on multiple devices without authenticating them.</p>

<p>Thanks in advance, Can anyone please give any suggestions to handle this scenario.</p>