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Condensed Consolidated Statements of Cash Flows - USD ($)
 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Cash Flows From Operating Activities:        
Net loss $ (936,031) $ (1,822,269) $ (1,758,716) $ (1,338,566)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:        
Depreciation and intangible asset amortization expense 54,973 90,867 120,103 161,180
Gain on forgiveness of note payable     (557,203)
Share-based compensation 51,055 252,757 277,183 788,599
Common stock issued for other expense 67,000    
Provision for doubtful accounts 20,975 13,150 13,425 32,651
Provision for excess and obsolete inventory (13,764) (5,117) 21,669 (223,971)
Loss on disposal of assets 8,042 4,124 4,124 115,359
Amortization of ROU asset 149,597 141,871 190,183
Changes in operating assets and liabilities:        
Accounts receivable (19,740) 27,950 91,452 39,179
Inventory (139,481) 714,709 882,466 (71,386)
Prepaid expenses and other (119,296) (488,007) (768,333) (141,143)
Accounts payable and accrued liabilities (110,872) (397,181) 26,157 23,830
Deferred revenue (664,663) 2,044,830 2,279,717 802,674
Accrued interest 3,268 3,203
Lease deposit (24,183)    
Operating lease liability, net (197,085) (79,521) (135,828) (20,039)
Accrued equity compensation 108,945 101,472 128,434 503,466
Net cash (used in)/provided by operating activities (1,761,260) 599,635 818,036 671,833
Cash Flows From Investing Activities        
Purchases of property and equipment (15,316) (3,500) (9,332) (3,043)
Proceeds from the sale of property equipment 1,500    
Net cash used in investing activities (13,816) (3,500) (9,332) (3,043)
Cash Flows From Financing Activities        
Cash proceeds from sale of preferred stock and warrants, net of issuance costs 1,259,874    
Proceeds from issuance of note payable 514,200 554,000 554,000
Net cash provided by financing activities 1,774,074 554,000 554,000
Net change in cash and cash equivalents (1,002) 1,150,135 1,362,704 668,790
Cash and cash equivalents, beginning of period 2,284,881 922,177 922,177 253,387
Cash and cash equivalents, end of period 2,283,879 2,072,312 2,284,881 922,177
Non-cash investing and financing activities:        
Interest paid
Income taxes paid
Supplemental cash flow information:        
Adjustment of carrying value of series B preferred stock to redemption value 2,262,847      
Subscription receivable - series B preferred stock 1,365,000    
Options issued for accrued equity compensation 128,434    
Accrued dividends $ 1,447