| Dec 31, 2017 | Dec 31, 2018 | Dec 31, 2019 | Dec 31, 2020 | Dec 31, 2021 | Dec 31, 2022 | Dec 31, 2023 | Dec 31, 2024 |
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| Loss | -21 | -21 | -19 | -26 | -30 | -30 | -26 | -18 |
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| Depreciation | 2 | 2 | 2 | 2 | 1 | 2 | 2 | 2 |
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| Amortization of intangible assets | - | - | 0 | 1 | 1 | 1 | 1 | 1 |
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| Share-based compensation | 2 | 2 | 2 | 4 | 3 | 1 | 2 | 2 |
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| Remeasurement of Convertible SAFE | - | - | - | - | - | 0 | 0 | 0 |
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| Pre-funded warrants issuance expenses | - | - | - | 0 | - | - | - | - |
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| Net financing income | - | - | 2 | -1 | 1 | -3 | 1 | 1 |
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| Loss (gain) from sale of property, plant and equipment | - | - | -0 | - | -0 | - | 0 | -1 |
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| Excess of initial fair value of pre-funded warrants over transaction proceeds | - | - | - | - | - | - | - | -3 |
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| Amortization of deferred expenses related to issuance of warrants | - | - | - | - | - | - | - | 0 |
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| Remeasurement of pre-funded warrants and warrants | - | - | - | - | - | - | - | -7 |
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| Share of loss of an associate | - | - | - | - | - | - | - | -0 |
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| Taxes on income (tax benefit) | 0 | 0 | 0 | 0 | 0 | 0 | -0 | 0 |
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| Adjustments to the profit or loss items | 3 | 4 | 2 | 8 | 4 | 7 | 4 | 1 |
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| Increase in trade receivables | 0 | -0 | 0 | -0 | -0 | -0 | -0 | -1 |
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| Decrease (increase) in other receivables | 0 | 0 | -1 | -1 | 1 | 1 | -1 | 1 |
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| Decrease (increase) in inventories | - | - | - | - | -0 | -0 | 0 | -2 |
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| Adjustments for deferred tax expense | - | - | - | - | - | -0 | 0 | - |
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| Increase in long term deposits | -0 | - | -0 | - | -0 | - | - | - |
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| Increase (decrease) in trade payables | -0 | -0 | -0 | -0 | 1 | -0 | 1 | -1 |
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| Increase (decrease) in employees and payroll accruals | 0 | - | -0 | 0 | 0 | -1 | 1 | -1 |
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| Increase (decrease) in other payables | 0 | 0 | 0 | -0 | 0 | 0 | -1 | 0 |
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| Decrease in deferred revenues and other advances | - | - | - | - | 0 | -0 | -0 | -1 |
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| Changes in asset and liability | -0 | -0 | -1 | -1 | 2 | -1 | -0 | -3 |
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| Interest received | 2 | 1 | 1 | 0 | 0 | 0 | 1 | 1 |
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| Interest paid | - | - | 0 | 0 | 0 | 0 | 0 | 0 |
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| Taxes paid | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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| Net cash used in operating activities | -16 | -15 | -18 | -20 | -25 | -24 | -22 | -20 |
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| Purchase of property, plant and equipment | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
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| Proceeds from sale of marketable securities | 23 | 64 | 27 | 2 | 4 | 12 | 7 | - |
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| Purchase of marketable securities | 12 | 32 | 2 | - | 23 | 1 | 1 | - |
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| Proceeds from sale of property, plant and equipment | - | - | - | - | - | - | 0 | 0 |
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| Proceeds from short-term bank deposits | - | - | - | - | - | - | - | 27 |
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| Investment in short-term bank deposits | - | - | - | - | - | - | - | 17 |
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| Net cash provided by (used in) investing activities | 15 | 17 | 37 | 9 | -21 | 13 | -5 | 10 |
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| Issuance of a subsidiary's preferred shares to non-controlling interests | - | - | - | - | - | - | 10 | - |
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| Proceeds from issuance of ordinary shares, pre-funded warrants and warrants | - | - | - | - | - | - | - | 6 |
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| Proceeds from issue of ordinary shares | - | - | - | 19 | 30 | 0 | 8 | 0 |
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| Proceeds from issuance of Convertible SAFE | - | - | - | - | - | 10 | - | - |
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| Proceeds from exercise of options | 1 | 0 | - | 0 | 0 | 0 | - | - |
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| Repayment of lease liabilities | - | - | 1 | 1 | 1 | 1 | 1 | 1 |
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| Proceeds from government grants | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 |
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| Repayment of government grants | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
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| Net cash provided by financing activities | 1 | 0 | 9 | 20 | 30 | 9 | 18 | 5 |
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| Exchange rate differences on cash and cash equivalent balances | 0 | -0 | 0 | 1 | 1 | -2 | -0 | -0 |
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| Decrease in cash and cash equivalents | 0 | 2 | 29 | 11 | -14 | -3 | -8 | -5 |
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| Purchase of property, plant and equipment | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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| Increase Of Operating Lease Rightofuseassets | - | - | 3 | -0 | 1 | 0 | 0 | 2 |
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| Exercise of options | - | - | - | 0 | - | - | - | - |
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| Acquisition of intangible assets | - | - | 17 | - | - | - | - | - |
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| Exercise of pre-funded warrants | - | - | - | - | 4 | - | - | 2 |
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| Investment in affiliated company with corresponding deferred revenues | - | - | - | - | - | - | - | 0 |
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