Stockholders' Equity Note Disclosure [Text Block] | 9. Stock-based Plans and Stock-based Compensation Stock-based Plans We have the 2010 2013 2016 2022 December 31, 2022 We believe that such awards better align the interests of our directors, officers and employees with those of our shareholders. Option awards are generally granted with an exercise price that equals the fair market value of our stock at the date of grant. These option awards generally vest based on four The following table summarizes stock option activity under our stock-based plans as of and for the years ended December 31, 2022 2021 Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Outstanding at December 31, 2020 6,007,552 $ 1.20 6.77 $ 527,868 Granted 637,500 $ 1.56 — $ — Exercised — $ 1.61 — $ — Forfeit/canceled (272,029 ) $ 2.18 — $ — Expired (126,557 ) $ 1.17 — $ — Outstanding at December 31, 2021 6,246,466 $ 1.20 7.17 $ 4,056,639 Granted 1,375,000 $ 1.02 — $ — Exercised — $ — — $ — Forfeit/canceled (330,623 ) $ 1.09 — $ — Expired (599,627 ) $ 0.98 — $ — Outstanding at December 31, 2022 6,691,216 $ 1.19 5.86 $ 2,086,829 Expected to vest at December 31, 2022 6,691,216 $ 1.19 5.85 $ 2,086,829 Exercisable at December 31, 2022 3,987,966 $ 1.22 3.98 $ 1,314,652 Unrecognized expense at December 31, 2022 $ 1,698,126 The aggregate intrinsic value of options was calculated as the difference between the exercise price of the underlying awards and the quoted price of our common stock. At December 31, 2022 The weighted average grant-date fair value of options granted during the years 2022 2021 2021 On March 26, 2021, five March 26, 2021, forty-eight March 26, 2031. On May 17, 2021, one May 17, 2021, forty-eight January 21, 2031. On August 11, 2021, one August 11, 2021, forty-eight August 11, 2031. On December 15, 2021, nineteen December 15, 2021, forty-eight February 18, 2029. $.97 In the twelve December 31, 2021 2022 On March 29, 2022, March 29, 2022, first March 29, 2032. On May 16, 2022, May 16, 2022, first May 16, 2032. On September 22, 2022, September 2022, first September 29, 2032. On December 14, 2022, December 14, 2022, first September 29, 2032. In the twelve December 31, 2022, In the twelve December 31, 2022 $260,010 Stock-based Compensation Expense The impact on our results of operations of recording stock-based compensation expense for the years ended December 31, 2022 2021 Years Ended December 31, 2022 2021 General and administrative $ 262,060 $ 289,782 Sales and marketing 113,838 81,093 Engineering, research, and development 211,712 178,893 $ 587,610 $ 549,768 As of December 31, 2022 2022 2026. may Stock Option Valuation Assumptions We calculated the fair value of each stock option award on the date of grant using the Black-Scholes option pricing model. The ranges of assumptions were used for the years ended December 31, 2022 2021 Years Ended December 31, 2022 2021 Risk-free interest rate 0.25% to 0.38% 0.42% to 0.58% Expected life (years) 7.00 6.00 Expected dividend yield — — Expected volatility 72.337% to 76.15% 77.36% to 78.21% The risk-free interest rate assumption is based upon published interest rates appropriate for the expected life of our employee stock options. The expected life of the stock options represents the weighted-average period that the stock options are expected to remain outstanding and was determined based on historical experience of similar awards, giving consideration to the contractual terms of the stock-based awards, vesting schedules and expectations of future employee behavior as influenced by changes to the terms of its stock-based awards. The dividend yield assumption is based on our history of not no The expected volatility in 2022 2021 Restricted stock units The following table summarizes restricted stock unit activity under our stock-based plans as of and for the years ended December 31, 2022 2021 Shares Weighted Average Grant Date Fair Value Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Outstanding at December 31, 2020 1,436,728 $ 0.86 — $ 1,120,404 Awarded 654,663 $ 1.77 — $ 60,003 Released — $ — — $ — Canceled/forfeited/expired (406,250 ) $ 1.80 — $ — Outstanding at December 31, 2021 1,685,141 $ 1.18 — $ 1,180,407 Awarded 244,792 $ 1.06 — $ 260,579 Released — $ — — $ — Canceled/forfeited/expired — $ — — $ — Outstanding at December 31, 2022 1,929,933 $ 0.75 — $ 1,440,986 Vested at December 31, 2022 1,929,933 $ — — $ 1,865,401 Unvested at December 31, 2022 — $ — — $ — Unrecognized expense at December 31, 2022 $ — 2021 On March 26, 2021 1/48 th four 2022 On March 26, 2021 four first 2021. March 26, 2024, On May 12, 2021, four May 12, 2024, ( On August 11, 2021, four August 11, 2024, On December 15, 2021, four December 15, 2024, In the twelve December 31, 2021 2022 On March 29, 2022, March 29, 2025, On May 16, 2022, May 16, 2025 ( On September 30, 2022, $.9985 September 30, 2025 ( On December 31, 2022 December 31, 2025, In the twelve December 31, 2022 Restricted Stock Unit Compensation Expense The impact on our results of operations of recording stock-based compensation expense for years ended December 31, 2022 2021 Years Ended December 31, 2022 2021 General and administrative $ 260,010 $ 260,005 Sales and Marketing — 187,501 $ 260,010 $ 447,506 |