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Nature of Business (Details Narrative) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |  |  |  |  |  |  |  |
Number of patents, description |  |  |  |  |  |  |  |  | Intellicheck continues to develop and release innovative products based upon its rich patent portfolio consisting of twenty issued patents and five pending. |
Net loss | $ 106,000 | $ (568,000) | $ (874,000) | $ (1,213,000) | $ (664,000) | $ (1,131,000) | $ (1,101,000) | $ (1,068,000) | $ (2,548,711) | $ (3,963,576)
Net cash used in operating activities |  |  |  |  |  |  |  |  | (1,840,850) | (4,220,611)
Cash | 3,350,853 |  |  |  | 4,376,017 |  |  |  | 3,350,853 | 4,376,017
Accumulated deficit | $ (116,935,112) |  |  |  | $ (114,386,401) |  |  |  | $ (116,935,112) | $ (114,386,401)

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