Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets
Cash	$ 3,273	$ 11,005
Accounts receivable, net	9	66
Other receivables	187	185
Inventory, net	577	476
Prepaid expenses	996	862
Other current assets	22
Total current assets	5,064	12,594
Property and equipment, net	365	409
Other assets
Goodwill	753	763
Intangible assets, net	236	333
Operating lease right-of-use asset, net	128	3
Total other assets	1,117	1,099
TOTAL ASSETS	6,546	14,102
Current liabilities
Accounts payable	1,043	1,069
Accrued liabilities	654	1,433
Operating lease liability	52	3
Deferred revenue	28	148
Total current liabilities	1,777	2,653
Non-current liabilities
Operating lease liability	83
Deferred revenue	184	193
TOTAL LIABILITIES	2,044	2,846
Commitments and contingencies (Note 10)
STOCKHOLDERS' EQUITY
Preferred stock, $0.001 par value; 10,000,000 shares authorized; no shares issued and outstanding as of June 30, 2022 and December 31, 2021
Class A common stock, $0.001 par value; 150,000,000 shares authorized; 4,195,113 and 3,780,674 shares issued and outstanding as of June 30, 2022 and December 31, 2021, respectively	4	4
Additional paid-in capital	150,665	149,412
Accumulated deficit	(145,191)	(137,035)
Accumulated other comprehensive loss	(976)	(1,125)
TOTAL STOCKHOLDERS' EQUITY	4,502	11,256
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 6,546	$ 14,102