Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Revenues	$ 948,800	$ 832,300	$ 2,734,600	$ 2,520,600
Cost of revenues	38,100	34,800	106,900	101,300
Gross profit	910,700	797,500	2,627,700	2,419,300
Operating expenses:
Selling and marketing	96,300	99,100	323,900	309,200
General and administrative	166,100	374,000	660,700	1,007,000
Research and development	361,300	352,800	1,118,800	1,139,300
Total operating expenses	623,700	825,900	2,103,400	2,455,500
Income (loss) from operations	287,000	(28,400)	524,300	(36,200)
Other income	200	10	14,100	129,800
Income (loss) before provision for income taxes	287,200	(28,390)	538,400	93,600
Provision for income taxes		(100)		900
Net income (loss)	$ 287,200	$ (28,290)	$ 538,400	$ 92,700
Net income (loss) per share, basic	$ 0.03	$ (0.00)	$ 0.05	$ 0.01
Net income (loss) per share, diluted	$ 0.03	$ (0.00)	$ 0.05	$ 0.01
Weighted average number of common shares outstanding
Basic	9,840,496	9,804,400	9,816,564	9,804,400
Diluted	10,302,577	9,804,400	10,278,646	10,368,956