Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities
Net loss	$ (1,160,639)	$ (1,900,848)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	62,945	60,413
Amortization of debt discount	136,785	0
Non-cash lease expense	289,839	265,098
Stock based compensation	1,400,182	1,406,699
Change in assets and liabilities:
Accounts receivable	(814,415)	932,080
Prepaid and other current assets	714,181	(874,943)
Accounts payable and accrued expenses	(631,078)	113,643
Accrued salaries and wages	87,526	(237,513)
Lease liabilities	(292,813)	(264,121)
Royalty payable	198,792	(216,350)
Deferred revenue	(354,756)	(100,800)
Net cash used in operating activities	(363,451)	(816,642)
Cash flows from investing activities
Purchase of marketable securities	(15,072,325)	0
Purchase of property and equipment	0	(50,887)
Net cash used in investing activities	(15,072,325)	(50,887)
Cash flows provided by financing activities
Proceeds from stock option and warrant exercises	616,224	685,101
Net cash provided by financing activities	616,224	685,101
Effect of foreign currency translation on cash	11,489	(295,655)
Net increase (decrease) in cash and cash equivalents	(14,808,063)	(478,083)
Cash and cash equivalents, beginning of period	48,251,336	30,980,473
Cash and cash equivalents, end of period	33,443,273	30,502,390
Interest paid during the period	583,014	0
Income taxes paid during the period	0	39,000
Supplemental disclosure of non-cash finance transactions
Right of use assets obtained in exchange for new lease obligations	1,094,259	0
Issuance of restricted stock	19	0
Cashless exercise of options	$ 0	$ 2