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Extended service-type warranties.

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Liquid investment maturity.

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Maximum agreement term.

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Reserve for collectability.

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No definition available.

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Amount of allowance for credit loss on accounts receivable.

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The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

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Amount as of the balance sheet date of the aggregate extended product warranty liability. Does not include the ending balance for the standard product warranty liability.

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Describes the nature of the extended product warranties, which generally require additional fees to be paid by the buyer, and other guarantee contracts excluded from the initial recognition and initial measurement requirements. Does not include disclosures for standard product warranties, which typically have substantially shorter periods of time or provide less coverage, or both.

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Amount of gain (loss) from the difference between the sale price or salvage price and the book value of an asset that was sold or retired, and gain (loss) from the write down of assets from their carrying value to fair value.

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Amount of valuation reserve for inventory.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Amount of time deposit liabilities, including certificates of deposit, in denominations that meet or exceed the Federal Deposit Insurance Corporation (FDIC) insurance limit.

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Organization and Significant Accounting Policies (Details Narrative) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Revenue	$ 2,769,779	$ 3,054,313	$ 6,107,942	$ 6,105,651
Deferred revenue liability current	$ 2,808,142		$ 2,808,142		$ 2,490,845
Extended warranties description	The Company warranties its products from manufacturing defects on a limited basis for a period of one year after purchase, but also sells separately priced extended service-type warranties for periods of up to four years after the expiration of the standard one-year warranty. During the term of the initial one-year warranty, if the device fails to operate properly from defects in materials and workmanship, the Company will fix or replace the defective product.	The Company warranties its products from manufacturing defects on a limited basis for a period of one year after purchase, but also sells separately priced extended service-type warranties for periods of up to four years after the expiration of the standard one-year warranty. During the term of the initial one-year warranty, if the device fails to operate properly from defects in materials and workmanship, the Company will fix or replace the defective product.	The Company warranties its products from manufacturing defects on a limited basis for a period of one year after purchase, but also sells separately priced extended service-type warranties for periods of up to four years after the expiration of the standard one-year warranty. During the term of the initial one-year warranty, if the device fails to operate properly from defects in materials and workmanship, the Company will fix or replace the defective product.	The Company warranties its products from manufacturing defects on a limited basis for a period of one year after purchase, but also sells separately priced extended service-type warranties for periods of up to four years after the expiration of the standard one-year warranty. During the term of the initial one-year warranty, if the device fails to operate properly from defects in materials and workmanship, the Company will fix or replace the defective product.
Extended service-type warranties	$ 647,513	$ 548,631	$ 1,296,632	$ 1,059,104
Customer Retainage	10,720		10,720		10,720
Allowance for doubtful accounts	33,855		$ 33,855		34,177
Liquid investment maturity description			The Company considers all highly liquid investments with a maturity of 90 days or less at the time of purchase to be cash equivalents.
Reserve for collectability			$ 12,979		5,701
Inventory reserves	120,652		120,652		120,652
Impairment Loss			$ 140,000	0
Maximum agreement term			5 years
Advertising expense	125,196	150,977	$ 263,432	270,380
Research and development	376,611	$ 353,665	706,366	$ 709,306
Deposit insurance coverage limit	250,000		250,000
Uninsured cash and cash equivalents	$ 3,278,180		$ 3,278,180		$ 1,069,887
One Federal Agency [Member] \| Total Net Sales [Member]
Concentration of credit risk	14.00%	14.00%
One Federal Agency [Member] \| Accounts Receivables [Member]
Concentration of credit risk			13.00%		30.00%
Second Federal Agency [Member] \| Total Net Sales [Member]
Concentration of credit risk	16.00%	18.00%		12.00%
Tribal Government Agency [Member] \| Total Net Sales [Member]
Concentration of credit risk		10.00%
Federal Agency [Member] \| Total Net Sales [Member]
Concentration of credit risk			16.00%	13.00%
State Agency [Member] \| Total Net Sales [Member]
Concentration of credit risk			11.00%
One State Agency [Member] \| Accounts Receivables [Member]
Concentration of credit risk			41.00%
Warranty [Member] \| One Year or Less [Member]
Extended warranties	$ 1,561,869		$ 1,561,869		$ 1,829,052
Warranty [Member] \| Longer Than One Year [Member]
Extended warranties	1,840,706		1,840,706		1,748,257
Warranty [Member] \| One Year [Member]
Extended warranties	330,176		330,176		331,176
Customer Deposits [Member]
Deferred revenue liability current	$ 1,235,552		1,235,552		$ 651,073
Governmental Customers [Member]
Revenue			$ 5,346,222	$ 5,341,640
Concentration of credit risk			87.00%	87.00%
Commercial Customers [Member]
Revenue			$ 360,668	$ 222,588
Concentration of credit risk			6.00%	4.00%
International Customers [Member]
Revenue			$ 401,052	$ 541,423
Concentration of credit risk			7.00%	9.00%
One International Customer [Member] \| Accounts Receivables [Member]
Concentration of credit risk			14.00%		20.00%