CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities:
Net loss	$ (3,281)	$ (3,416)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	74	73
Stock-based compensation	181	173
Operating lease	38	(3)
Bad debt expense	6	2
Changes in operating assets and liabilities:
Accounts receivable	(141)	(150)
Prepaid expenses and other current assets	139	(76)
Inventory	83	(104)
Accounts payable	(92)	41
Accrued expenses	286	47
Deferred revenue	0	(3)
Net cash used in operating activities	(2,707)	(3,416)
Cash flows from investing activities:
Purchase of property and equipment	(83)	(41)
Net cash used in investing activities	(83)	(41)
Cash flows from financing activities:
Proceeds from the exercise of warrants, net	4,860	6
Proceeds from issuances of common stock, net	2,706	0
Proceeds from issuance of notes payable	0	25
Repayments of notes payable	(28)	(17)
Net cash provided by financing activities	7,538	14
Increase (decrease) in cash and cash equivalents	4,748	(3,443)
Cash and cash equivalents, beginning of period	1,307	5,395
Cash and cash equivalents, end of period	6,055	1,952
Supplemental cash flow information is as follows:
Interest paid	11	9
Income taxes paid	0	0
Non-cash investing and financing activities:
Operating lease entered into for right-to-use asset	2,439	0
Note payable incurred for the purchase of certain equipment	$ 0	$ 4