Simunix

UK customer Age Verification from AVUK is much more than just a pop box that anyone can tick to say that they are 18 years or over. 
The fundamental difference with this plugin is that it will take the name and address details your customer has used to register an account with on your website, and match against a database of UK people that contains date of births. 
Any website using WordPress and WooCommerce that sells age restricted products is required to prove they have only sold such products to customers over the age of 18. Verifying UK customers against actual data is the reliable and easy way to do this, with no inconvenience to your customers of manual age checks in the purchase process, thus reducing cart abandonment. 
Age restricted items include tobacco products and e-cigarettes, alcohol, 18+ films and computer games, bladed items, acids and other corrosive substances, offensive weapons, betting. This service uses a our API which is a 3rd party resource and requires an active credit balance.
Instant Age Verification
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During the checkout process, your customer will input their name and address detail in registering for an account, or be logged in to an existing account containing these details. 
The plugin will instantly compare their name and address to a UK database and verify if they are age 18 or over. This age verification will be seamless in the background and your website’s process of checking out and paying for basket items will continue as normal. 
Any UK customer buying age restricted items that is not verified as 18+ will receive a message and be unable to proceed to purchase. You can then employ your own age checks on the customer and be able to flag them in the admin section as ‘manually verified’. They will then be allowed to purchase their age restricted items through your usual checkout process.
This service uses a our API which is a 3rd party resource and requires an active credit balance.
Demo our Age Verification data service here: [https://ageverifyuk.com/#demo)
Everything you need to know
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<ul>
<li>Works using tried and tested data and methods from ageverifyuk.com which is an api developed by Simunix Ltd, established in 1998.</li>
<li>Matches name and address details for a UK customer against AVUK data sources and verifies if they are aged 18 or over.</li>
<li>All your customers can be viewed in the admin section where they will have a status of age verified or unverified. Here you have the ability to manually verify a customer, for use when they could not be automatically verified but have since passed your own proof of age checks.</li>
<li>You will be able to view a list of all your products in the admin section and tick any that are age restricted and require customer age verification. If all products on your website are age restricted (e.g. e-cigarette website) you can simply turn on age verification for the whole website.</li>
<li>As the plugin uses data from the AVUK.io website, you will need to set up a AVUK account.</li>
<li>Within your AVUK account you can update your login / password details and buy credits. 10 credits are deducted from your credit balance for every age verification check undertaken. The cost of each verification check will be between £0.10 and £0.29 depending on the size of credit pack you buy.</li>
<li>You will be able to view your credit balance and top up your credits at any time. You will receive notifications when your balance is running low.</li>
</ul>

Age Verify UK

Age verification for WooCommerce installations using the Age Verify UK method

Phil

There are many uses for restricting content based on age, be it movie trailers, beer or other adult themes. This plugin allows you to set a restriction on what content can been seen or restricted based on the age of the user.
Features
<ul>
<li>Ask users to verify their age on page load</li>
<li>SEO Friendly – common bots and crawlers are omitted from age checks</li>
<li>Ability to add custom user agents for less common bots</li>
<li>Shortcode for in content restrictions</li>
<li>Choose to restrict an entire site, or selected content</li>
<li>Select a different age on individual content</li>
<li>Allow certain content to not be age gated under “all content” mode</li>
<li>Three choices for input; dropdowns, input fields or a simple yes/no button</li>
<li>Customise the order of the inputs based on your region (DD MM YYYY or MM DD YYYY)</li>
<li>Allow a “remember me” check box if desired</li>
<li>Ability to omit logged in users from being checked</li>
<li>Add your own logo</li>
<li>Update the text displayed on the entry form</li>
<li>Select background colour/image, foreground colour and text colour</li>
<li>Use built in styling out of the box, or your own custom style</li>
<li>Ability to add legal note or information to the bottom of the form</li>
<li>Redirect failed logins to a URL of your choice e.g. an alcohol awareness website.</li>
<li>Ability to use a non caching version</li>
<li>Various hooks to add even more customisation such as additional form fields</li>
<li>Compatible with multilingual plugins WPML, Polylang (2.3+), WP Multilang</li>
</ul>

Age Gate

the plugin does it's job properly, but it spams the dashboard with nags about next version age gate; you click dismiss and it's back there... very very annoying.

spamming dashboard with announcements

A plugin to check the age of a visitor before view site or specified content

Age Verify UK vs Age Gate