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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Cash flows provided by operating activities:    
Net loss $ (84) $ (122)
Depreciation and amortization 38 20
Impairment of inventory 3
Non-cash lease expense 31 29
Stock-based compensation 17 31
Change in operating assets and liabilities:    
(Increase) decrease in accounts receivable (174) 56
Increase in inventory (18) (57)
Decrease (increase) in deferred COGS 37 (135)
(Increase) decrease in other current assets and other assets (20) 7
Increase in deferred revenue 45 299
Decrease in operating lease liability (33) (30)
Increase in accounts payable, accrued expenses, other current liabilities and non-current liabilities 75 123
Net cash (used in) provided by operating activities (83) 221
Cash flows used in investing activities:    
Investments in technology (26) (157)
Other capital investments (2)
Net cash used in investing activities (26) (159)
Cash flows provided by financing activities:    
Warrant exercise proceeds 5
Net cash provided by financing activities 5
Net (decrease) increase in cash (104) 62
Cash at the beginning of the period 1,450 1,722
Cash at the end of the period 1,346 1,784
Non-cash investing and financing activities:    
Accrued preferred dividends to former CEO of OmniMetrix $ 1 $ 1