Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net loss	$ (696,760)	$ (2,232,553)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	511,698	488,745
Amortization of operating lease right-of-use assets	33,447	28,545
Provision for bad debts	0	20,125
Gain on sale of property and equipment	0	(739)
Share-based compensation	603,533	2,452,701
Deferred income taxes	(131,204)	(120,835)
Changes in assets and liabilities:
Accounts receivable	(41,710)	(60,044)
Prepaid expenses and other current assets	20,143	(59,362)
Accounts payable	837,650	546,859
Accrued expenses	99,153	63,460
Contract liabilities	2,058	3,444
Operating lease obligations	(34,654)	(29,537)
Net cash provided by operating activities	1,203,354	1,100,809
Cash flows from investing activities:
Proceeds from sale of property and equipment	0	739
Purchase of property and equipment	(1,120)	0
Net cash provided by (used in) investing activities	(1,120)	739
Cash flows from financing activities:
Payments on finance leases	(2,907)	(9,627)
Proceeds from warrant exercise	0	35,636
Payments of preferred dividends	0	(26,252)
Net cash used in financing activities	(2,907)	(243)
Effect of exchange rate changes on cash and cash equivalents	(3,850)	67,024
Net change in cash and cash equivalents	1,195,477	1,168,329
Cash and cash equivalents, beginning of year	1,644,210	475,881
Cash and cash equivalents, end of year	2,839,687	1,644,210
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Income taxes	956	500
Interest	85	664
SUPPLEMENTAL DISCLOSURES OF NON-CASH ITEMS
Issuance of common shares in settlement of accrued expenses	2,005,500	0
Issuance of preferred shares for settlement of dividends	$ 0	$ 358,638