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Stockholders’ Equity (Details) - USD ($) |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
May 10, 2021 | Aug. 06, 2020 | Oct. 26, 2021 | Oct. 21, 2021 | Sep. 29, 2020 | Mar. 31, 2022 | Dec. 31, 2021 | Dec. 29, 2021 | Aug. 12, 2021 | Dec. 29, 2020
Stockholders’ Equity (Details) [Line Items] |  |  |  |  |  |  |  |  |  |
Number of shares |  |  |  | 1,808,000 |  |  |  |  |  |
Gross sales price percentage |  |  |  |  |  | 3.00% |  |  |  |
Description of shares of common stock |  |  |  |  | stockholders approved a proposal to increase the number of authorized shares of our common stock to 25,000,000 shares. Accordingly, on November 5, 2020, we filed an amendment to the Neonode Inc. Restated Certificate of Incorporation, as amended (our “Certificate of Incorporation”), with the Secretary of State of the State of Delaware to increase the number of authorized shares of our common stock to 25,000,000 shares. |  |  |  |  |
Shares issued |  |  |  |  |  |  |  | 14,735 | 12,830 |
Net proceeds (in Dollars) |  |  | $ 13,100,000 |  |  |  |  |  |  |
Shares price (in Dollars per share) |  |  |  | $ 7.75 |  |  |  |  |  |
Warrants outstanding |  |  |  |  |  | 0 | 431,368 |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |
Stockholders’ Equity (Details) [Line Items] |  |  |  |  |  |  |  |  |  |
Number of shares | 25,000,000 |  |  |  |  |  |  |  |  |
Shares issued |  |  |  |  |  |  |  |  |  | 37,288
Aggregate shares |  |  |  |  |  |  | 235,722 |  |  |
Net proceeds (in Dollars) |  |  |  |  |  |  | $ 1,984,000 |  |  |
Commissions amount (in Dollars) |  |  |  |  |  |  | $ 66,000 |  |  |
Warrant [Member] |  |  |  |  |  |  |  |  |  |
Stockholders’ Equity (Details) [Line Items] |  |  |  |  |  |  |  |  |  |
Shares issued |  |  |  |  |  | 431,368 |  |  |  |
Series C-1 Preferred Stock and Series C-2 Preferred Stock [Member] | Private Placement [Member] |  |  |  |  |  |  |  |  |  |
Stockholders’ Equity (Details) [Line Items] |  |  |  |  |  |  |  |  |  |
Description of shares of common stock |  | On October 21, 2021, we entered into a placement agency agreement with Pareto Securities Inc. and Pareto Securities AB pursuant to which we sold to certain Swedish and other European investors an aggregate of 1,808,000 shares of our common stock at a price of $7.75 per share in a registered direct offering that closed on October 26, 2021 (the “Offering”). |  |  |  |  |  |  |  |

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