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Consolidated Statements of Cash Flows - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Cash flows from operating activities:    
Loss for the year $ (7,097,000) $ (4,435,000)
Adjustments to reconcile loss for the year to net cash used in operating activities:    
Depreciation 13,000 23,000
Capital loss from sale of property and equipment 1,000
Stock-based compensation 281,000 439,000
Issuance of restricted shares as compensation to directors 54,000 48,000
Linkage difference on principal of loans from stockholders 1,000 11,000
Changes in assets and liabilities:    
Increase in other current assets (309,000) (28,000)
Increase in accounts payable 167,000 74,000
Increase (Decrease) in other current liabilities 332,000 138,000
Net cash used in operating activities (6,558,000) (3,729,000)
Cash flows from investment activities:    
Proceeds from sale of property and equipment 2,000
Purchase of property and equipment (1,000)
Net cash provided by investment activities 1,000
Cash flows from financing activities    
Net proceeds received from underwritten U.S. public offering (Note 5B) 8,730,000
Net cash provided by financing activities 8,730,000
Effect of exchange rate changes on cash and cash equivalents (1,000) (54,000)
Change in cash, cash equivalents, and restricted cash 2,171,000 (3,782,000)
Cash, cash equivalents, and restricted cash at beginning of the year 2,331,000 6,113,000
Cash, cash equivalents, and restricted cash at end of the year $ 4,502,000 $ 2,331,000