Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Cash flows from Operating Activities:
Net loss	$ (6,355,000)	$ (4,043,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Bad debt (recovery) expense	(18,000)	2,000
Non-cash lease expense from right-of-use assets	0	17,000
Stock-based compensation	169,000	62,000
Non-cash revenue from digital assets	(186,000)	0
Non-cash expenses from digital assets	8,000	0
Unrealized loss on digital assets	3,519,000	0
Changes in assets and liabilities:
Accounts receivable	66,000	236,000
Prepaid expenses and other current assets	(140,000)	125,000
Inventory	0	239,000
Other assets	2,000	6,000
Accounts payable	7,000	(107,000)
Accrued expenses and other current liabilities	(64,000)	195,000
Deferred revenue	(23,000)	(121,000)
Lease liabilities	0	(17,000)
Net cash used in operating activities	(3,015,000)	(3,406,000)
Cash flows from Investing Activities:
Purchases of digital assets	(8,736,000)	0
Net cash used in investing activities	(8,736,000)	0
Cash flows from Financing Activities:
Proceeds from private placement, net of issuance costs	6,888,000	0
Net cash provided by financing activities	9,043,000	2,381,000
Net decrease in cash and cash equivalents	(2,708,000)	(1,025,000)
Cash and restricted cash at beginning of year	4,965,000	5,990,000
Cash and cash equivalents at end of year	2,257,000	4,965,000
Reconciliation of cash and cash equivalents
Cash	1,758,000	4,465,000
Current certificates of deposit	500,000	500,000
Total cash and cash equivalents	2,258,000	4,965,000
Non-cash investing and financing activities:
Common warrant issuance	335,000	0
Series F Preferred Stock conversion	39,000	191,000
Dividends, Preferred Stock	32,000	89,000
Warrants, deemed dividend	0	8,974,000
Common Stock Warrants [Member]
Cash flows from Financing Activities:
Proceeds from exercise of common stock warrants, net of costs	1,639,000	903,000
Preferred Warrants [Member]
Cash flows from Financing Activities:
Proceeds from exercise of common stock warrants, net of costs	$ 516,000	$ 1,478,000