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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Cash flows from operating activities:    
Loss for the year $ (4,067) $ (2,696)
Adjustments to reconcile loss for the year to net cash used in operating activities:    
Depreciation 42 47
Capital loss from sale of property and equipment 42
Stock-based compensation 223 22
Issuance of restricted shares as compensation to directors 38 168
Linkage difference on principal of loans from stockholders 6 (8)
Changes in assets and liabilities:    
Decrease in accounts receivable 68 10
Decrease (increase) in inventory 293 (85)
Decrease (increase) in other current assets 15 (9)
Decrease in accounts payable (257) (714)
Decrease in other current liabilities (172) (236)
Net cash used in operating activities (3,769) (3,501)
Cash flows from investment activities:    
Proceeds from sale of property and equipment 4
Purchase of property and equipment (5) (53)
Net cash used in investment activities (1) (53)
Cash flows from financing activities    
Proceeds from issuance of common stock, net of cash issuance costs 13,009
Net cash provided by financing activities 13,009
Effect of exchange rate changes on cash and cash equivalents (2) (46)
Change in cash, cash equivalents, and restricted cash (3,772) 9,409
Cash, cash equivalents, and restricted cash at beginning of the year 9,885 476
Cash, cash equivalents, and restricted cash at end of the year $ 6,113 $ 9,885