Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (2,086,668)	$ (2,168,332)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	123,492	120,618
Stock-based compensation expense	442,781	124,701
Provision for doubtful accounts		5,625
Deferred rent		(6,002)
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	(170,282)	173,298
Decrease in inventory	746	4,104
(Increase) in other current assets	(50,579)	(233,703)
Decrease in other assets	1,964	57,439
Increase in accounts payable and accrued expenses	149,634	107,980
(Decrease) in deferred revenue	(7,918)	(154,901)
(Decrease) in other long-term liabilities		(158,407)
Net cash used in operating activities	(1,596,830)	(2,127,580)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(6,529)	(127,505)
Collection of note receivable	20,850	20,034
Net cash provided by (used in) investing activities	14,321	(107,471)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net proceeds from issuance of common stock from exercise of stock options	63,250	687,521
Net proceeds from issuance of common stock from exercise of warrants	204,283
Net cash provided by financing activities	267,533	687,521
Net decrease in cash	(1,314,976)	(1,547,530)
CASH, beginning of period	4,376,017	8,010,161
CASH, end of period	$ 3,061,041	$ 6,462,631