woocommerce - Is there a way to obfuscate Wordpress file download URLs -

woocommerce - Is there a way to obfuscate Wordpress file download URLs -

im using acf associate custom file field woocommerce on site. field receive customers invoice pdf 1 time order completed. problem files have sequence numbering, helpful maintain can identify them in admin interface, don't want customers able guess numbering , open other invoices.

is there way add together little obfuscation urls don't show sequence obvious sequence pattern?

wordpress woocommerce acf