The Square Payment Module for WHMCS is Merchant type payment gateway which allows you to accept debit/credit card
payment on your site.It’s Tokenised Gateways module where recurring/subscription billing is possible by storing token , not the full sensitive card details, thus reducing your PCI DSS liabilities on your website.
Following are the features supported by Square payment gateway module
Support recurring/subscription Payment.
Support update/delete card details on Square up.
No local storage of cards
Strong Customer Authentication(SCA)
PCI-DSS standards followed and hence card details are loaded in highly secure Iframe environment .
Currently available in the U.S.A, Canada, Australia, Japan and the UK
SSL installation is must for using square payment gateway