Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues
Revenue	$ 464,000	$ 418,000	$ 1,035,000	$ 856,000
Cost of revenue
Gross profit	201,000	217,000	433,000	395,000
Selling, general and administrative expenses	1,547,000	1,872,000	3,310,000	3,417,000
Research and development	356,000	350,000	683,000	684,000
Operating loss	(1,702,000)	(2,005,000)	(3,560,000)	(3,706,000)
Other (expense) income:
Interest expense	(89,000)	(747,000)	(182,000)	(1,504,000)
Loss on debt extinguishment	0	0	0	(214,000)
PPP loan forgiveness	0	0	43,000	0
Tax credit	1,000	44,000	1,000	44,000
Grant income	0	7,000	30,000	64,000
Total other expense:	(88,000)	(696,000)	(108,000)	(1,610,000)
Net loss	(1,790,000)	(2,701,000)	(3,668,000)	(5,316,000)
Net loss attributable to noncontrolling interest	(168,000)	(275,000)	(415,000)	(617,000)
Net loss attributable to common shareholders	$ (1,622,000)	$ (2,426,000)	$ (3,253,000)	$ (4,699,000)
Net loss per share attributable to common shareholders:
Loss per share attributable to shareholders – basic and diluted (in dollars per share)	$ (0.01)	$ (0.01)	$ (0.02)	$ (0.03)
Weighted average number of common shares outstanding: (in shares)	243,731,011	181,567,199	238,759,632	175,220,216
Comprehensive loss:
Net loss	$ (1,790,000)	$ (2,701,000)	$ (3,668,000)	$ (5,316,000)
Foreign currency translation	0	22,000	(2,000)	22,000
Comprehensive loss	(1,790,000)	(2,679,000)	(3,670,000)	(5,294,000)
Comprehensive loss attributable to noncontrolling interest	(168,000)	(275,000)	(415,000)	(617,000)
Comprehensive loss attributable to common stockholders	(1,622,000)	(2,404,000)	(3,255,000)	(4,677,000)
Product [Member]
Revenues
Revenue	319,000	301,000	762,000	580,000
Cost of revenue
Cost of Goods and Services Sold	(160,000)	(109,000)	(397,000)	(237,000)
Service [Member]
Revenues
Revenue	145,000	117,000	273,000	276,000
Cost of revenue
Cost of Goods and Services Sold	$ (103,000)	$ (92,000)	$ (205,000)	$ (224,000)