Google Maps API warning: NoApiKeys
<p>I've been using Google Maps API v3 for some time without an API key, and it worked well.<br>
It still works, but I get a warning in the console:</p>

<blockquote>
  <p>Google Maps API warning: NoApiKeys
  <a href="https://developers.google.com/maps/documentation/javascript/error-messages#no-api-keys" rel="noreferrer">https://developers.google.com/maps/documentation/javascript/error-messages#no-api-keys</a></p>
</blockquote>

<p>I include the script the standard way:</p>

<pre><code>&lt;script src="https://maps.googleapis.com/maps/api/js?libraries=places"&gt;&lt;/script&gt;
</code></pre>

<p>And <code>google.maps.version</code> indicates that I'm using 3.24.2.</p>

<p>In the Google documentation I can only see the different ways to obtain a key, but there is no indication if it's required or not. I noticed the warning today and I'm quite sure it didn't appear a few weeks ago.</p>

<p>Everything is working fine for now, but I'm afraid that maps access without an API key will be ceased in the future. I'm reluctant to register for a key if I don't absolutely need to.</p>

<p>Should I worry about it?</p>