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Balance Sheets (Current Period Unaudited) - USD ($)
Sep. 30, 2023
Dec. 31, 2022
Current assets:    
Cash $ 463,288 $ 425,578
Accounts receivable, net of allowance for doubtful accounts of $68,589 at September 30, 2023 and December 31, 2022, respectively 82,098 59,613
Inventory 3,464 15,464
Marketable securities 2,276 3,216,280
Prepaid expenses and other current assets 259,393 190,120
Total current assets 810,519 3,907,055
Property and equipment:    
Right of use lease, net of amortization of $266,476 and $213,459 at September 30, 2023 and December 31, 2022, respectively 282,623 335,640
Total property and equipment 346,017 428,726
Investments 8,424,000 0
Total assets 9,580,536 4,335,781
Liabilities, Current [Abstract]    
Accounts payable and accrued expenses 825,087 730,099
Accrued interest 1,613 1,613
Unearned subscriptions 571,379 1,022,428
Lease liability right of use, current 66,079 70,002
Note payable, current portion (Note 8) 28,950 28,733
Total current liabilities 1,493,108 1,852,875
Long term liabilities:    
Lease liability right of use, long term 216,545 265,639
Total long term liabilities 234,419 $ 305,253
Commitments and Contingencies  
Common Stock, Shares, Outstanding (in shares) 3,197,815 3,297,927
Common stock, $0.001 par value, 100,000,000 shares authorized: 3,197,815 and 3,297,927 issued and outstanding at September 30, 2023 and December 31, 2022, respectively $ 3,198 $ 3,298
Common stock payable 0 23,340
Treasury stock (15,291) (1,102,375)
Additional paid in capital 26,676,475 18,070,556
Accumulated deficit (18,817,043) (14,820,436)
Total stockholders' equity 7,853,009 2,177,653
Total liabilities and stockholders' equity 9,580,536 4,335,781
Undesignated Preferred Stock [Member]    
Long term liabilities:    
Preferred stock, $0.001 par value, 5,000,000 shares authorized; no shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively 0 0
Series A Preferred Stock [Member]    
Long term liabilities:    
Preferred stock, $0.001 par value, 5,000,000 shares authorized; no shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively 3,270 3,270
Series B Preferred Stock [Member]    
Long term liabilities:    
Preferred stock, $0.001 par value, 5,000,000 shares authorized; no shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively 2,400 0
Related Party [Member]    
Long term liabilities:    
Note payable (Note 8) 17,874 39,614
Machinery and Equipment [Member]    
Property and equipment:    
Office, computer and related equipment, net of depreciation of $136,707 and $104,410 at September 30, 2023 and December 31, 2022, respectively $ 63,394 $ 93,086