Payment Interface device type - manufacturer independent.
An 'xcmHrDevicePaymentInterface' device is an payment
authorization device.
An 'xcmHrDevicePaymentInterface' device with
'xcmHrDevInfoRealization' of 'physical' is a 'real' point of
purchase validation device (eg, a 'coin operated', 'smart card'
or other form of point of purchase payment for services
rendered on a multi-function printer or copier).
An 'xcmHrDevicePaymentInterface' device with
'xcmHrDevInfoRealization' of 'logical' is a 'virtual' point
of purchase validation device (eg, a software service that
accepts payment through the Web or some other form of remote
point of purchase payment for services rendered on a
multi-function printer or copier).