Condensed Balance Sheets (Unaudited) - USD ($)	Jun. 30, 2025	Dec. 31, 2024
CURRENT ASSETS:
Cash and cash equivalents	$ 995,750	$ 1,243,746
Accounts receivable, net	765,730	732,541
Inventories, net	2,988,752	2,996,397
Federal and state income taxes receivable	55,531	80,560
Prepaid expenses and other	160,079	40,045
Total current assets	4,965,842	5,093,289
PROPERTY, PLANT AND EQUIPMENT:
Land	317,932	317,932
Building	1,928,795	1,928,795
Real-time Alcohol Detection And Recognition equipment and software	569,448	569,448
Production equipment, software and space modifications	1,349,839	1,349,839
Training courses	432,375	432,375
Office equipment, software and space modifications	254,333	254,333
Sales and marketing equipment and space modifications	231,818	226,356
Research and development equipment, software and space modifications	805,012	787,664
Research and development equipment, software and space modifications not in service	347,448	128,007
Less accumulated depreciation	(3,826,061)	(3,613,452)
Total property and equipment, net	2,410,939	2,381,297
OTHER ASSETS:
Patents, net	74,913	78,723
Deposits and other	12,261	12,261
Deferred income taxes	1,159,199	1,159,199
Total other assets	1,246,373	1,250,183
Total assets	8,623,154	8,724,769
CURRENT LIABILITIES:
Accounts payable	393,046	251,627
Term loan payable, current portion	54,016	53,195
Subordinated debentures payable, current portion	16,645	0
Customer and tenant deposits	37,628	43,814
Accrued expenses	349,397	293,981
Deferred revenue, current portion	58,862	54,458
Product warranty reserve	46,500	46,500
Total current liabilities	956,094	743,575
TERM LOAN PAYABLE, net of current portion and debt issuance costs	1,086,062	1,119,152
SUBORDINATED DEBENTURES PAYABLE, net of current portion and debt issuance costs	687,041	630,000
DEFERRED REVENUE, net of current portion	6,105	6,165
Total liabilities	2,735,302	2,498,892
COMMITMENTS AND CONTINGENCIES (Note 6)
STOCKHOLDERS' EQUITY:
Common stock, no par value; 50,000,000 shares authorized, 2,752,616   shares outstanding (2,664,116 outstanding at December 31, 2024)	5,934,314	5,586,014
Retained earnings (deficit)	(46,462)	639,863
Total stockholders' equity	5,887,852	6,225,877
Total liabilities and stockholders' equity	$ 8,623,154	$ 8,724,769