Concentration of Risk
The Company maintains its cash and cash equivalents with two financial institutions that management believes to be of high credit quality. At times, the Company’s cash balances may exceed federally insured limits and cash may also be deposited in foreign bank accounts that are not covered by federal deposit insurance. The Company does not believe that this results in any significant credit risk beyond the normal credit risk associated with commercial banking relationships.
Significant customers are those that accounted for 10% or more of the Company’s total revenue for the period or accounts receivable as of the end of a reporting period. During the three and six months ended June 30, 2023, two customers represented 27% and 30% of revenue, respectively. During the three and six months ended June 30, 2022, one customer represented 25% and 29% of revenue, respectively. As of June 30, 2023, two customers accounted for 15% and 11% of accounts receivable, respectively. As of December 31, 2022, one customer accounted for 14% of accounts receivable.
Certain components included in the Company’s products are obtained from a single source or a limited group of suppliers. During the three and six months ended June 30, 2023, the Company purchased 49% and 55%, respectively, of its inventory from one supplier. During the three and six months ended June 30, 2022, the Company purchased 35% and 32%, respectively, of its inventory from two and one suppliers, respectively. As of June 30, 2023, amounts payable to one supplier totaled 18% of total accounts payable. At December 31, 2022, amounts payable to two suppliers totaled 34% of total accounts payable.
Accounts Receivable
Accounts receivable are reduced by an allowance for doubtful accounts, if needed. The Company maintains an allowance for doubtful accounts of an amount equal to anticipated future write-offs. The Company recorded an allowance for doubtful accounts of $230,200 at June 30, 2023. The Company determined that no allowance was necessary at December 31, 2022.
Foreign Currency
The Company’s functional currency is the US dollar; transactions denominated in foreign currencies are subject to currency risk. The Company recognized $35,200 and $48,900 in foreign currency transaction losses for the three months ended June 30, 2023 and 2022, respectively. The Company recognized $29,100 and $72,200 in foreign currency losses for the six months ended June 30, 2023 and 2022, respectively.
Leases
For transactions in which the Company is the lessee, at the inception of a contract, the Company determines if the arrangement is, or contains, a lease. See Note 7 for additional details about leases under which the Company is the lessee.
All transactions in which the Company is the lessor are short-term (one year or less) and have been classified as operating leases. All leases require upfront payments covering the full period of the lease and thus, there are no future payments expected to be received from existing leases. See Note 3 for details on revenue recognition related to lease agreements.
Loss Per Share
Basic loss per share is computed by dividing net loss available to common stockholders by the weighted average number of shares of common stock outstanding during the period.
For periods of net income, and when the effects are not anti-dilutive, diluted earnings per share is computed by dividing net income available to common stockholders by the weighted-average number of shares outstanding plus the impact of all potential dilutive common shares, consisting primarily of common stock options, restricted stock units and shares under employee stock purchase plans, and in the prior year periods stock purchase warrants, using the treasury stock method.
For periods of net loss, diluted loss per share is calculated similarly to basic loss per share because the impact of all dilutive potential common shares is anti-dilutive. The number of anti-dilutive shares excluded from the computation of diluted loss