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Note B - Revenue From Contracts With Customers - Disaggregation of Revenue (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Revenue from Contract with Customer, Including Assessed Tax |  | $ 2,267,528 | $ 4,044,542
North America [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 1,392,083 | 1,679,521
South America [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 67,867 | 85,865
EMEA [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax | [1] | 559,616 | 819,010
Asia [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 247,962 | 1,460,146
License [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 442,649 | 1,739,897
License [Member] | North America [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 208,827 | 318,271
License [Member] | South America [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 46,717 | 32,000
License [Member] | EMEA [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax | [1] | 117,401 | 278,516
License [Member] | Asia [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 69,704 | 1,111,110
Hardware [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 899,634 | 1,292,069
Hardware [Member] | North America [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 388,938 | 439,480
Hardware [Member] | South America [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 12,636 | 53,200
Hardware [Member] | EMEA [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax | [1] | 342,304 | 477,674
Hardware [Member] | Asia [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 155,756 | 321,715
Maintenance [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 904,215 | 894,606
Maintenance [Member] | North America [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 780,288 | 805,800
Maintenance [Member] | South America [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 8,514 | 665
Maintenance [Member] | EMEA [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 96,911 | 60,820
Maintenance [Member] | Asia [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 18,502 | 27,321
Professional Services [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 21,030 | 117,970
Professional Services [Member] | North America [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 14,030 | 115,970
Professional Services [Member] | South America [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  |  |
Professional Services [Member] | EMEA [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | 3,000 | 2,000
Professional Services [Member] | Asia [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  | $ 4,000 |
[1] | EMEA - Europe, Middle East, Africa

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- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130543-203045 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
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