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Consolidated Statements of Cash Flows - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Cash flows from operating activities:    
Net loss $ (3,711,000) $ (5,448,000)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 1,000 1,000
Stock-based compensation 293,000 354,000
Noncash interest expense 135,000 347,000
Change in fair value of equity investment 2,000 16,000
Changes in operating assets and liabilities:    
Trade receivable (309,000) 191,000
Other accounts receivable and prepaid expenses 558,000 (482,000)
Inventory (557,000) (2,000,000)
Trade payables 72,000 (21,000)
Other accounts payable and accrued expenses (18,000) 78,000
Deferred revenue (67,000) (69,000)
Accrued severance pay, net (1,000) (2,000)
Net cash used in operating activities (3,602,000) (7,035,000)
Cash flows from investing activities:    
Purchases of fixed assets (1,000) (3,000)
Net cash used in investing activities (1,000) (3,000)
Cash flows from financing activities:    
Proceeds from sale of common stock, net 4,215,000 2,090,000
Proceeds from exercise of options 7,000 2,000
Net cash provided by financing activities 4,222,000 2,092,000
Effects of currency translation on cash (49,000) (78,000)
Net (decrease) increase in cash 570,000 (5,024,000)
Cash at beginning of period 2,713,000 7,737,000
Cash at end of period 3,283,000 2,713,000
Supplemental disclosures of cash flow information:    
Cash paid for interest
Cash paid for taxes
Supplemental non-cash financing and investing activities:    
Exchange of common stock into preferred stock
Shares issued from exercise of warrants previously classified as derivative liability
Reclass derivative liability to equity due to increase in authorized shares
Reclass liability to equity after increase in authorized shares