CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash	$ 5,107,000	$ 8,939,000
Restricted cash	0	61,000
Accounts receivable, net	491,000	849,000
Inventory	1,078,000	1,821,000
Prepaid expenses and other current assets	1,150,000	1,081,000
Total current assets	7,826,000	12,751,000
Property and equipment, net	75,000	159,000
Goodwill	0	7,367,000
Intangibles, net	6,402,000	7,562,000
Operating lease - right of use asset, net	245,000	659,000
Other assets	22,000	109,000
Total assets	14,570,000	28,607,000
Current liabilities:
Accounts payable	325,000	259,000
Accrued expenses and other current liabilities	976,000	959,000
Current portion of deferred revenue	686,000	783,000
Current portion of operating lease liabilities	378,000	492,000
Total current liabilities	2,365,000	2,493,000
Long-term liabilities:
Operating lease liabilities, net of current portion	68,000	236,000
Deferred revenue, net of current portion	213,000	381,000
Total long-term liabilities	281,000	617,000
Total liabilities	2,646,000	3,110,000
Commitments and contingencies (see Note 11)
Stockholders’ equity:
Common stock, $.0001 par value; 150,000,000 shares authorized; 30,929,331 shares issued and 30,816,048 outstanding at June 30, 2022 and December 31, 2021	3,000	3,000
Treasury stock, 113,283 shares of common stock at June 30, 2022 and December 31, 2021	(181,000)	(181,000)
Additional paid-in capital	227,580,000	227,581,000
Accumulated deficit	(215,478,000)	(201,906,000)
Total stockholder's equity	11,924,000	25,497,000
Total liabilities and stockholders’ equity	$ 14,570,000	$ 28,607,000