Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
OPERATING ACTIVITIES
Net income	$ 1,626,620	$ 1,576,428
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	41,370	21,099
Deferred income taxes	207,000	113,000
Provision of credit losses	(827)	5,108
Stock issued for services to non-employee	0	2,700
Stock compensation expense	105,183	122,441
Accrued interest on short-term investments	0	(124,939)
Noncash operating lease expense, net	29,013	44,755
Gain on sale of equipment	(350)	(18,000)
Changes in operating assets and liabilities:
Accounts receivable	170,613	(358,981)
Inventory	320,210	968,479
Prepaid expenses	97,513	(169,881)
Net investment in sales type leases	14,134	55,149
Accounts payable and accrued expenses	70,861	(164,326)
Payroll liabilities	0	75,606
Increase (Decrease) in Contract with Customer, Liability	(756,851)	84,797
Income tax receivable and payable	(118,008)	(215,382)
Net cash provided by operating activities	1,806,481	2,018,053
INVESTING ACTIVITIES
Capital expenditures	(31,114)	(129,075)
Proceeds from sale of equipment	350	18,000
Purchase of short-term investment	0	(6,561,614)
Proceeds from short-term investments	4,627,744	3,561,614
Capitalized software development costs	(61,989)	0
Net cash provided by (used in) investing activities	4,534,991	(3,111,075)
FINANCING ACTIVITIES
Proceeds from exercise of employee of stock options	7,860	0
Payment of dividends	(371,240)	(139,053)
Net cash used in financing activities	(363,380)	(139,053)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	5,978,092	(1,232,075)
CASH AND CASH EQUIVALENTS
Beginning of year	2,257,696	3,489,771
End of year	8,235,788	2,257,696
Supplemental cash flow information:
Cash paid for income taxes	373,008	634,882
Common Stock Issued out of Treasury Stock [Member]
Non-cash investing and financing activities:
Stock Issued	13,960	0
Treasury Stock Issued to Employees [Member]
Non-cash investing and financing activities:
Stock Issued	$ 0	$ 773