Note O - Income Taxes (Tables)
|
12 Months Ended |
Dec. 31, 2025 |
| Notes Tables |
|
| Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] |
| | | Year ended | | | Year ended | |
| | | December 31, | | | December 31, | |
| | | 2025 | | | 2024 | |
| | | | | | | | | |
| United States | | $ | (6,179,476 | ) | | $ | (2,767,752 | ) |
| Hong Kong | | | (74,045 | ) | | | (222,901 | ) |
| Nigeria | | | (164,518 | ) | | | (223,426 | ) |
| Spain | | | (723,407 | ) | | | (1,109,611 | ) |
| Portugal | | | - | | | | - | |
| Total | | $ | (7,141,446 | ) | | $ | (4,323,690 | ) |
|
| Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
| | | Year ended | | | Year ended | |
| | | December 31, | | | December 31, | |
| | | 2025 | | | 2024 | |
| Current | | | | | | | | |
| Federal and States | | $ | - | | | $ | - | |
| Foreign: | | | | | | | | |
| Subtotal | | | - | | | $ | - | |
| Deferred: | | | | | | | | |
| Federal and States | | | | | | | | |
| | | | | | | | | |
| Foreign | | | 16,500 | | | | (22,998 | ) |
| Subtotal | | | 16,500 | | | | (22,998 | ) |
| | | | | | | | | |
| Provision for income tax expense (benefit) | | $ | 16,500 | | | $ | (22,998 | ) |
|
| Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
| | | December 31, | | | | December 31, | |
| | | 2025 | | | | 2024 | |
| | | | | | | | | | |
| Accrued compensation | | $ | 140,490 | | | | $ | 154,457 | |
| Allowance for credit losses | | | 20,626 | | | | | 20,513 | |
| Research and development expenses | | | 724,038 | | | | | 1,261,601 | |
| Capital loss carry forward | | | 114,885 | | | | | 114,251 | |
| Right-of-use operating lease assets | | | (5,979 | ) | | | | (16,346 | ) |
| Operating lease liabilities | | | - | | | | | 16,406 | |
| Stock-based compensation | | | 54,258 | | | | | 34,299 | |
| Equipment and leasehold improvements | | | (1,951 | ) | | | | (6,268 | ) |
| Impairment of investment | | | 712,500 | | | | | - | |
| Intangible assets - Foreign | | | (89,000 | ) | | | | - | |
| Allowance for credit losses - Foreign | | | 72,500 | | | | | - | |
| Inventory reserve | | | 589,271 | | | | | 781,213 | |
| Other | | | 1,006 | | | | | 1,000 | |
| Tax credits | | | 1,116,119 | | | | | 1,554,541 | |
| Net operating loss and research and credit carryforwards | | | 11,686,140 | | | | | 11,824,622 | |
| Valuation allowance | | | (15,083,017 | ) | | | | (15,740,289 | ) |
| | | | | | | | | | |
| Net deferred tax liability | | $ | - | | | | $ | - | |
|
| Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
| | | Year ended | |
| | | December 31, | |
| | | 2025 | |
| | | | | | | | | |
| Federal statutory income tax rate | | $ | (1,673,013 | ) | | | 21 | % |
| State taxes, net of federal benefit | | | - | | | | - | |
| Permanent differences | | | | | | | | |
| Amortization of intangible assets | | | 33,242 | | | | (0.7 | ) |
| Restricted Stock units | | | 26,334 | | | | (0.6 | ) |
| Others | | | 2,918 | | | | (0.1 | ) |
| Expiration of net operating loss and research credit carryforwards | | | 1,848,627 | | | | (40.5 | ) |
| | | | | | | | | |
| Foreign rate differential - all | | | 187,823 | | | | (4.1) | |
| | | | | | | | | |
| True ups and other | | | 175,955 | | | | (3.9 | ) |
| Valuation allowance | | | (585,386 | ) | | | 28.5 | |
| | | | - | | | | | |
| Effective tax rate | | $ | 16,500 | | | | (0.4 | )% |
| | | Year ended | |
| | | December 31, | |
| | | 2024 | |
| | | | | |
| Federal statutory income tax rate | | | 21 | % |
| State taxes, net of federal benefit | | | 0.82 | |
| Permanent differences | | | (1.84 | ) |
| Expiration of net operating loss and research credit carryforwards | | | (46.14 | ) |
| Foreign rate differential | | | (7.23 | ) |
| Rate change | | | (0.41 | ) |
| Other | | | 0.14 | |
| Valuation allowance | | | 33.98 | |
| | | | | |
| Effective tax rate | | | 0.32 | % |
|