title: Shopify Access a product with its id on thank you page without using '/admin' in url
body: <p>I am trying to access a specific product using its id from the below url,<br></p>
  
  <pre><code>https://tempstore.myshopify.com/products/1234.json
  </code></pre>
  
  <p>Its giving me 404 error.<br>
  Although, I am able to access all products as below:<br></p>
  
  <pre><code>https://tempstore.myshopify.com/products.json
  </code></pre>
  
  <p>I have to access the product which was just processed in checkout process.<br>
  I have its id as below:<br></p>
  
  <pre><code>var products = Shopify.checkout.line_items;
  </code></pre>
  
  <p><strong>products</strong> will contain an array of product id's only which are processed in checkout.<br>Now I need to access all other properties of these products.<br>
  I can surely do this:<br></p>
  
  <pre><code>https://tempstore.myshopify.com/admin/products/1234.json
  </code></pre>
  
  <p>But it requires Authentication.<br>
  Any thoughts?</p>