Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Cash Flows From Operating Activities
Net loss	$ (1,518)	$ (581)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation	48	189
Gain on sale of property and equipment		(1)
Change in fair value of derivative liability	407	67
Loss on settlement of derivative	417
Amortization of note discount		62
Change in operating assets and liabilities
Accounts receivable	(126)
Prepaid expenses and other current assets	112	(2)
Intangible digital assets	(2)	(2)
Other assets	(1)
Operating lease liability	1
Accounts payable	104	301
Accrued expenses	(95)	(212)
Deferred revenue	54
Security deposit	70
Net cash used in operating activities	(529)	(179)
Cash Flows From Investing Activities
Purchase of property and equipment	(68)
Proceeds from sale of property and equipment		131
Net cash provided by (used in) investing activities	(68)	131
Cash Flows From Financing Activities
Proceeds from convertible note payable		1,000
Net cash provided by financing activities		1,000
Net change in cash and cash equivalents	(597)	952
Cash and cash equivalents, beginning of year	1,230	236	$ 236
Cash and cash equivalents, end of period	633	1,188	$ 1,230
Supplemental disclosure of cash flow information
Cash paid for interest
Cash paid for income tax
Non-cash investing and financing activities
Cashless exercise of warrants and extinguishment of related warrant derivative liability	588
Discount related to convertible promissory note		$ 1,000