CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net loss	$ (746,073)	$ (286,091)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	16,726	21,522
Provision for inventory obsolescence	10,000	5,000
Amortization of deferred financing costs	0	1,357
Change in fair value of common stock warrant	0	(95,000)
Non-cash stock-based compensation	7,755	8,179
Changes in assets and liabilities:
Decrease in accounts receivable	422,165	334,926
Decrease in inventories	164,046	37,849
(Increase) decrease in prepaid expenses & other assets	(14,360)	109,224
Increase in restricted cash for appeal bond	(998)	0
Decrease in accounts payable and other accrued expenses	(3,771)	(197,378)
Decrease in accrued payroll, vacation pay & withholdings	(67,517)	(26,383)
Increase (decrease) in deferred revenues	199,545	(35,925)
Increase in accrued legal damages	12,652	0
Net cash provided by (used in) operating activities	170	(122,720)
Cash flows from investing activities:
Purchases of equipment	0	(21,506)
Net cash used in investing activities	0	(21,506)
Cash flows from financing activities:
Proceeds from line of credit	0	200,000
Repayment of long-term debt	(1,590)	(107,329)
Repayment of line of credit	(50,000)	0
Repayment of capitalized lease obligations	(1,660)	(1,514)
Net cash (used in) provided by financing activities	(53,250)	91,157
Net decrease in cash and cash equivalents	(53,080)	(53,069)
Cash and cash equivalents at beginning of period	307,812	287,873
Cash and cash equivalents at end of period	254,732	234,804
Supplemental cash flow information:
Taxes paid	0	0
Interest paid	$ 18,554	$ 28,524