For example, the Solaris coin already introduces this possibility:
https://bitcointalk.org/index.php?topic=1831629.6960
...Solaris (XLR) is integrated into MyCryptoCheckout !
Businesses are now able to utilize MyCryptoCheckout and accept XLR!
Anyone is now free to use XLR as a payment method in their WooCommerce / EasyDigitalDownloads webshops, and any custom webshops that use the MyCryptoCheckout....