You can create one using the popups, but it still does not lock you out if you say you are under 21.

https://squareup.com/help/us/en/article/6956-add-a-pop-up-or-banner

Can we have age verification for square register inbuilt ? 

We really do need this update soon. And especially for those of us that have the barcode scanner it would be nice to easily scan the customers ID and verify age. Luckily here in Louisiana we have an app from the state of Louisiana to easily verify age and vaccination status however using a separate service to do this is quite bothersome.

Looking for any further information on this.  I would also like a pop-up age verification on the POS to help prevent accidental selling of alcoholic beverages in our store.  Many of our products are locally produced, and may not be easily identified between local sodas and local beers. 

Square needs to get us an update on this, I am a new liquor store and really want to use the Square POS but seeing how the Age verification feature isn't available and no liquor store category on the Square POS really makes worried about the support they can offer.  At least they need to add the age verification for in store purchases, where we can age lock certain categories.  This wouldn't be that hard to do if they can allow us to create a rule or at least work with a 3rd party system that can integrate with the Square POS.  Please update us on this request. 

There are many 3rd party things for this, I agree would love to see square have this but let them do what they do best and be a processor. 

long waiting for this feature.