As such, Apple Pay is supported through a series of different workarounds: gambling vouchers, player transfers, and the third-party MatchPay service, all of which work with the Apple Cash P2P feature. This is due to a US banking regulation called the UIGEA, and it simply means that Apple Pay/Cash and similar services cannot be accepted by overseas betting sites (even though these sites remain legal and safe to use for US players). Remember, Apple Cash and Google Pay are not directly accepted by any offshore or international gambling site.
Despite the fact that Apple Pay/Apple Cash compatibility promises far greater overall convenience for millions of US online gamblers (and potential gamblers), there are still some hoops to jump through.
