RegisterONE has it's own scan app that can be used on any Android or iOS mobile device. This app allows you to scan e-tickets, receipts and badges to verify purchases, general admission and anything else you wish to verify.
Sometimes an exhibitor wants to send you payment that falls outside of the standard electronic payment process. This may be a check or even cash. It could also be in the form of a credit that you promised a vendor. This explains how to process and track deposits of any amount.