Can I manually enter a card to the Point of Sale app?

[Lidzia]

Can I manually enter a US credit card? 

[VanKalkerFarms]

Yes, you need the card number, expiration, code on the back, and the zip.  has to be 100% accurate.

https://squareup.com/help/us/en/article/5176-manually-key-in-card-payments-without-the-square-reader