Keep Players Playing
Print secure and redeemable tickets even when
slot machines are offline.
Positively validate tickets printed from offline
slot machines.
How? GSA’s G2S protocol uses the combination of a secret seed and an encrypted validation number
to provide the ability to determine the validity of an “offline ticket.”
The process has been determined by the Nevada Gaming Control Board to be a valid means to
validate and pay an offline ticket (Nevada Technical Standard 3.050(11)).
Machines Offline due to
system error, equipment failure, etc...
Slot Floor
Offline Machines
Cannot Print Tickets
Database with Voucher Data
Keep your players playing!
• Offline cash outs result in tickets, not handpays
• Players can redeem their offline voucher for cash so funds are not tied up waiting for the slot machine
to come back online
• Reduce the risk of cashing invalid offline vouchers
Details
Details
Ticketing (voucher) machines have become the norm in many
casino operations. However, the benefit of this technology is
not without its drawbacks. The most significant drawback
is the requirement that the gaming machines be in constant
communication with the ticketing system. The result is that,
when communications are down, the casino floor is effectively
down too.
Many jurisdictions have requirements limiting or prohibiting
offline ticket printing as there is no effective way to validate
an offline ticket. This is where GSA’s G2S Protocol can help.
G2S provides the communication link between the EGM and
the back of house system. The G2S standard also provides
a secure and definitive method to identify, validate and pay
an offline voucher that is effective enough to be accepted by
the Nevada Gaming Control Board.
How it works.
A set of seed and validation identifier pairs are generated by
the voucher database and sent to the EGM. When a ticket
printed, the validation
The G2S standard isidentifier,
the seed, the
amount of the ticket and the
also provides a
machine identifier
secure and definitive EGM’s
(a number unique to that
method to identify, EGM) are HASHed together
an MD5 HASH
validate and pay an using
algorithm to generate an
offline voucher that authentication identifier.
The authentication identifier,
is effective enough the validation identifier, the
to be accepted by machine identifier and the
ticket amount are printed on
the Nevada Gaming the ticket. The seed is not
printed on the ticket.
Control Board.
To manually redeem a ticket the validation identifier, machine
identifier and the ticket amount are scanned or typed into
the voucher system from a cashier station. The voucher
database recognizes the validation identifier and returns the
corresponding seed value. The seed, the validation identifier,
the machine identifier and the ticket amount are re-HASHed
by the cashier station. If the resulting HASH answer matches
the authentication number printed on the ticket, the ticket is
valid and should be paid. The accounting system should
mark the ticket as paid in the voucher database to prevent
accepting duplicates of the redeemed ticket.
Benefits
The ability to redeem offline vouchers efficiently keeps
the money out of your database and in the hands of your
customers. This is important because even though your
voucher system is
This is important
available 99% of the
time, it still means
because even though
that it’s down for 87.6
hours of the year. The your voucher system
redemption capability
is available 99% of
will not only smooth out
the bumps due to offline the time, it still means
periods but also reduce
that it’s down for 87.6
theft and keep your
customers happy.
hours of the year.
When the EGM reestablishes communication with the
accounting system, it communicates all the vouchers that
it has issued while it was offline. The accounting system
reconciles the vouchers that have been paid manually. Once
the database has been updated the outstanding vouchers
maybe redeemed normally.
www.gamingstandards.com
The ideas presented in this document only serve to explain and promote the potential uses of GSA’s open standards.