Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash Flows From Operating Activities:
Net loss	$ (900,195)	$ (1,883,544)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and intangible asset amortization expense	48,859	26,872
Gain on change in derivative liabilities		(21,403)
Compensation paid in equity	355,731	640,621
Provision for doubtful accounts	(27,802)	37,899
Provision for excess and obsolete inventory	4,092	(9,947)
Changes in operating assets and liabilities:
Accounts receivable	(28,056)	172,395
Inventory	191,503	(29,971)
Prepaid expenses and other	6,800	99,559
Operating lease right-of-use asset	44,147
Accounts payable and accrued liabilities	136,635	(235,947)
Deferred revenue	428,827	(321,926)
Lease liability	(48,568)
Net cash provided by (used in) operating activities	211,973	(1,525,392)
Cash Flows From Investing Activities
Capitalization of intangible assets		(1,550)
Purchases of property and equipment		(159,927)
Proceeds from payment of tenant improvement allowance		100,000
Cash disbursed for equipment held for lease		(11,782)
Net cash used in investing activities		(73,259)
Cash Flows From Financing Activities
Proceeds from exercises of stock options		3,375
Proceeds from exercise of investor warrants		15,000
Payments on loans from shareholders		(6,927)
Net cash provided by financing activities		11,448
Net increase (decrease) in cash	211,973	(1,587,203)
Cash, beginning of period	253,387	2,468,199
Cash, end of period	465,360	880,996
Supplemental cash flow information:
Interest paid		35
Non-cash investing and financing activities:
Equity issued in settlement		226,400
Extinguishment of derivative liability on cashless exercise of warrants		389,477
Unpaid purchases of equipment and other assets		$ 41,811