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Note O - Income Taxes (Tables) | 12 Months Ended
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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 | %

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-9 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-2 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 231 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482663/740-10-55-231 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12A Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12 + Details
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- Definition Tabular disclosure of income before income tax between domestic and foreign jurisdictions. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(1)(Note 1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 + Details
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