Install the Cayan security certificate on your computer so that Lightspeed Retail can communicate with the payment terminal. Install the certificate on every computer that you use for processing Lightspeed Retail sales.
On your computer in Firefox or Chrome install the certificate from http://cayan.com/Site/Media/Cayan/Cayan.crt. Install the certificate using the same browser you use to access Lightspeed Retail.
Depending on your browser and OS, do one of these:
Firefox (Mac OS and Windows): enable Trust this CA to identify websites, and then click OK.
Connect the Genius payment terminal to your local network with the network cable.
Power on the device.
From the Genius idle screen, enter 000 on the device keypad.
Enter the password 9416557.
Record the IP address because you need it to set up the payment terminal in Lightspeed Retail.
Press the red X (cancel) button to return to the idle screen.
Go to Lightspeed and on the Main Menu click Settings and then Shop Setup, click the shop and then on the Credit Card Terminals tab, change the IP address to match the one you jotted down earlier