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Consolidated Statements of Cash Flows - USD ($)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Cash flows from operating activities:    
Net loss $ (2,340,864) $ (3,808,978)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 67,082 195,377
Warrant market adjustment 652,025
Share-based compensation 327,554 841,612
Loss on disposal of fixed asset 50,666
Bad debts 81,367 156,636
Other income - PPP loan forgiveness (202,052)
Change in assets and liabilities:    
Royalty receivables (23,597) (123,021)
Prepaid expenses and other current assets 2,323 (6,104)
Accounts payable and accrued expenses (156,770) 1,904
Deferred revenue (7,734) (42,836)
Net cash used in operating activities (2,252,691) (2,082,719)
Cash flows from investing activities:    
Purchases of fixed assets (56,536) (65,282)
Proceeds from sale of fixed asset 3,713
Net cash used in investing activities (52,823) (65,282)
Cash flows from financing activities:    
Net proceeds from issuances of common stock and warrants and exercise of options and warrants 284,207 5,770,545
Proceeds from PPP loan 202,052
Net cash provided by financing activities 486,259 5,770,545
Net (decrease) increase in cash and cash equivalents (1,819,255) 3,622,544
Cash and cash equivalents at beginning of year 6,591,960 2,969,416
Cash and cash equivalents at end of year $ 4,772,705 $ 6,591,960