This article explains how to use HandyPay on a Handy device.
HandyPay is an additional functionality on compatible Handy devices. HandyPay enables users to complete the payment process on the handheld device.
Using HandyPay is the same as using Handy with any other card payment terminal, except that the same device will display the payment instructions and is used to complete the payment.
For more info on how to complete a payment in Handy, check out Payment.