12. Concentrations

Revenues from the Company’s services to a limited number of customers have accounted for a substantial percentage of the Company’s total revenues. For the three months ended March 31, 2014, the Company’s two largest customers, Tiburon, Inc. (“Tiburon”) a reseller, and CareWorks (“CareWorks”) a direct end user, accounted for 15% and 7%, respectively, of the Company’s revenue for that period. For the three months ended March 31, 2013, the Company’s two largest customers, Tiburon, Inc. (“Tiburon”) and Muratec America, Inc. (“Muratec”), which are both Resellers, accounted for 11% and 10%, respectively, of the Company’s revenue for that period.

For the three months ended March 31, 2014 and 2013, government contracts represented approximately 44% and 45% of the Company’s net revenues, respectively. A significant portion of the Company’s sales to Tiburon and Lexmark represent ultimate sales to government agencies.

As of March 31, 2014, accounts receivable concentrations from the Company’s four largest customers were 20%, 18%, 15% and 13% of gross accounts receivable, respectively. As of December 31, 2013, accounts receivable concentrations from the Company’s four largest customers were 24%, 21%, 17% and 12% of gross accounts receivable, respectively. Accounts receivable balances from the Company’s four largest customers at March 31, 2014 have since been partially collected.