Methods and devices are provided for making, storing and retrieving
electronic representations of payment documents such as payment tickets
used for gaming machines. Some implementations sort currency and
non-currency payment documents. According to some embodiments, electronic
representations are made only of non-currency payment documents. After an
electronic representation of a non-currency payment document is made, the
payment document is preferably voided. Voided payment documents may be
stored in a non-secure storage area, may be automatically disposed of, or
may simply be ejected. Some implementations provide devices and methods
for resolving payment disputes by reference to stored electronic
representations of payment documents. Other embodiments read information
from a payment document and make an electronic representation of the
payment document without retaining the payment document. Voiding
information is transmitted to, e.g., a host device and/or a gaming
machine in order to prevent re-use of a payment document.