CONSOLIDATED STATEMENT OF OPERATIONS - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue	$ 9,265,000	$ 4,843,000	$ 1,384,000
Cost of revenue	5,833,000	2,741,000	815,000
Gross profit	3,432,000	2,102,000	569,000
Research and development expenses	74,768,000	20,497,000	15,406,000
General and administrative expenses	28,407,000	5,664,000	4,290,000
Selling and marketing expenses	4,443,000	1,682,000	966,000
Total operating expenses	107,618,000	27,843,000	20,662,000
Operating loss	(104,186,000)	(25,741,000)	(20,093,000)
Interest income	372,000	195,000	516,000
Other income (expense), net	1,936,000	(24,000)	(17,000)
Loss before income taxes	(101,878,000)	(25,570,000)	(19,594,000)
Income taxes	0	0	0
Net loss	(101,878,000)	(25,570,000)	(19,594,000)
Unrealized loss on available-for-sale securities	(524,000)	0	0
Total comprehensive loss	$ (102,402,000)	$ (25,570,000)	$ (19,594,000)
Net loss attributable per share to common stockholders:
Net loss per share, basis and diluted	$ (0.51)	$ (0.18)	$ (0.17)
Weighted-average shares used in computing net loss per share attributable to common stockholders:
Weighted-average shares used in computing net loss per share, basic and diluted	200,849,663	141,741,752	114,967,922
Product [Member]
Revenue	$ 1,776,000	$ 1,534,000	$ 819,000
Cost of revenue	1,365,000	717,000	563,000
Professional Service [Member]
Revenue	7,489,000	3,309,000	565,000
Cost of revenue	$ 4,468,000	$ 2,024,000	$ 252,000