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RELATED PARTY TRANSACTIONS (Details Narrative) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
May 31, 2021 | May 31, 2020 | May 31, 2021 | May 31, 2020 | Nov. 30, 2018 | Nov. 30, 2020
Related Party Transaction [Line Items] |  |  |  |  |  |
Number of stock options granted |  |  | 41,000 |  |  |
Stock Issued During Period, Value, Purchase of Assets |  |  |  | $ 697 |  |
Value of common stock issued for services |  |  |  | 118 |  |
Andre Buys [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Payments for royalties |  |  | $ 200 | 1 |  |
Accrued royalties payable | $ 100 |  | 100 |  |  | $ 300
Number of stock options granted |  |  |  |  | 150,000 |
Stock-based compensation expense | $ 2 | $ 4 | 6 | 8 |  |
Chief Executive Officer [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Monthly rent, utilities and maintenance charge |  |  | $ 2 |  |  |
Related party transaction, amounts of expenses |  | $ 10 |  | $ 20 |  |
Patents [Member] | Andre Buys [Member] |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Stock Issued During Period, Shares, Purchase of Assets |  |  | 386,681 |  |  |
Stock Issued During Period, Value, Purchase of Assets |  |  | $ 700 |  |  |

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