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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Cash from operating activities: |  |
Net Loss | $ (6,747,435) | $ (2,470,882)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Bad debt expense (recovery) | (3,217) | 220,405
Depreciation and amortization | 222,514 | 184,620
Stock based compensation | 351,970 | 44,874
Modification of employee stock options | 102,800 |
Interest expense related to debt discounts | 94,627 | 64,652
Amortization of operating lease right of use asset | 234,001 | 214,100
Changes in assets and liabilities: |  |
Accounts receivable | 1,369,949 | (1,293,219)
Contract assets | 1,273,462 | (167,316)
Prepaid expenses and other current assets | 491,598 | (174,202)
Accounts payable | (2,042,118) | 1,224,720
Related payable-related party | (5,091) | (682)
Payroll taxes payable | (111,965) | (202,462)
Accrued expenses | 697,320 | 203,861
Operating lease obligation | (239,688) | (201,761)
Contract liabilities | 700,892 | (2,240,168)
Deferred revenue | (621,058) | 573,900
Net cash used in operating activities | (4,231,439) | (4,019,560)
Cash flows from investing activities: |  |
Purchase of patents/trademarks | (8,185) | (13,095)
Purchase of fixed assets | (279,146) | (206,480)
Net cash used in investing activities | (287,331) | (219,575)
Cash flows from financing activities: |  |
Repurchase of common stock |  | (7,993)
Repayments of line of credit | (27,615) | (3,586)
Repayments of related party notes |  | (80,000)
Stock issuance costs | (1,001,885) | (20,000)
Repayments of notes payable | (1,000,000) | (262,500)
Repayments of insurance and equipment financing | (260,983) | (266,134)
Repayment of finance lease | (62,931) | (24,652)
Proceeds from SBA loan | 1,410,270 |
Proceeds from notes payable-related parties |  | 1,080,000
Proceeds from notes payable |  | 250,000
Proceeds from equipment leasing | 121,637 | 102,928
Proceeds from common stock issued | 9,253,128 |
Proceeds from warrants exercised |  | 2,318,020
Net cash provided by financing activities | 8,431,621 | 3,086,083
Net increase (decrease) in cash | 3,912,851 | (1,153,052)
Cash, beginning of period | 56,249 | 1,209,301
Cash, end of period | 3,969,100 | 56,249
Supplemental Disclosure of Cash Flow Information: |  |
Interest paid | 33,698 | 6,320
Supplemental Non-Cash Investing and Financing Activities: |  |
Common stock issued for accrued BOD fees | 52,500 | 32,917
Lease right of use asset and liability |  | 644,245
Note issued for financing of insurance premiums | 261,626 | 260,103
Debt discount on Notes issued |  | 12,500
Note issued for equipment financing lease |  | 55,822
Relative fair value of warrant recorded as debt discount |  | $ 146,779

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