2. Summary of Significant Accounting Policies	12 Months Ended
Dec. 31, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Basis of Presentation The Company's financial statements are prepared on the accrual method of accounting. The accounting and reporting policies of the Company conform with generally accepted accounting principles (GAAP). As a result of the change in control resulting from the closing of the Securities Exchange Agreement transaction, OXYS has assumed the public reporting obligations of the public company. Accordingly, the 2016 comparative financial statements are those of OXYS. Principles of Consolidation The consolidated financial statements for December 31, 2017 include the accounts of IIOT-OXYS, Inc., and OXYS Corporation. All significant intercompany balances and transactions have been eliminated. Accounts Receivable and Allowance for Doubtful Accounts Trade accounts receivable are carried at original invoice amount less an estimate made for doubtful accounts. The Company determines the allowance for doubtful accounts by identifying potential troubled accounts and by using historical experience and future expectations applied to an aging of accounts. Trade accounts receivable are written off when deemed uncollectible. Recoveries of trade accounts receivable previously written off are recorded as income when received. The allowance for doubtful accounts at December 31, 2017 and 2016 was $0. Revenue Recognition The Company’s revenue is derived primarily from providing services under contractual agreements. The Company recognizes revenue in accordance with ASC Topic No. 605 based on the following criteria: Persuasive evidence of an arrangement exists, services have been rendered, the price is fixed or determinable, and collectability is reasonably assured. Reclassification Certain amounts in prior-period financial statements have been reclassified for comparative purposes to conform to presentation in the current-period financial statements. Use of Estimates Management uses estimates and assumptions in preparing these financial statements in accordance with generally accepted accounting principles. These estimates and assumptions affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported revenues and expenses during the reporting period. Actual results could vary from the estimates that were used. Fair Value of Financial Instruments Fair Value of Financial Instruments - The Company accounts for fair value measurements in accordance with accounting standard ASC 820-10-50, “Fair Value Measurements.” This guidance defines fair value, establishes a three-level valuation hierarchy for disclosures of fair value measurement and enhances disclosure requirements for fair value measures. The three levels are defined as follows: Level 1 inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2 inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument. Level 3 inputs to valuation methodology are unobservable and significant to the fair measurement. The fair value of certain of our financial instruments including cash and cash equivalents, cash escrow and due to stockholder approximate their carrying amounts because of the short-term maturity of these instruments. Income Taxes The Company accounts for income taxes in accordance with FASB ASC 740, Income Taxes, which requires the recognition of deferred income taxes for differences between the basis of assets and liabilities for financial statement and income tax purposes. Deferred taxes are recognized for operating losses that are available to offset future taxable income. Valuation allowances are established to reduce deferred tax assets to the amount expected to be realized. The Company adopted the provisions of FASB ASC 740-10-25, which prescribes a recognition threshold and measurement attribute for the recognition and measurement of tax positions taken or expected to be taken in income tax returns. FASB ASC 740-10-25 also provides guidance on de-recognition of income tax assets and liabilities, classification of current and deferred income tax assets and liabilities, and accounting for interest and penalties associated with tax positions. The Company's tax returns are subject to tax examinations by U.S. federal and state authorities until respective statute of limitation. Currently, the 2016 tax year is open and subject to examination by taxing authorities. However, the Company is not currently under audit nor has the Company been contacted by any of the taxing authorities. The Company does not have any accruals for uncertain tax positions at December 31, 2017 and 2016. It is not anticipated that unrecognized tax benefits would significantly increase or decrease within 12 months of the reporting date. Cash and Cash Equivalents For purposes of the statement of cash flows, the Company considers all unrestricted highly liquid investments with an original maturity of three months or less to be cash equivalents. Concentration of Risk Financial instruments that potentially expose the Company to concentrations of risk consist primarily of cash and cash equivalents and cash-escrow, which are generally not collateralized. The Company’s policy is to place its cash and cash equivalents with high quality financial institutions, in order to limit the amount of credit exposure. Accounts at each institution are insured by the Federal Deposit Insurance Corporation (FDIC), up to $250,000. At December 31, 2017 and 2016, the Company had $0 and $231,841 in excess of the FDIC insurance limit, respectively. Inventory Inventory consists primarily of demo equipment and is recorded at the lower of cost (first-in, first out method) or market. Earnings (Loss) Per Share The Company computes net earnings (loss) per share under Accounting Standards Codification subtopic 260-10, "Earnings Per Share" ("ASC 260-1 O"). Basic earnings or loss per share ("EPS") is computed by dividing net income (loss) available to common stockholders by the weighted average number of common shares outstanding for the period. Going Concern The accompanying financial statements have been prepared assuming that the Company will continue as a going concern. As shown in the accompanying financial statements, the Company was only recently formed, has incurred continuing operating losses and has an accumulated deficit of $1,539,721 and $8,626 at December 31, 2017 and 2016, respectively. These factors raise substantial doubt about the ability of the Company to continue as a going concern. Management believes that it will be able to achieve a satisfactory level of liquidity to meet the Company’s obligations through December 31, 2018 by generating revenues and through additional borrowings as needed. However, there can be no assurance that the Company will be able to generate sufficient liquidity to maintain its operations. The financial statements do not include any adjustments that might result from the outcome of these uncertainties.

2. Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2017

Summary of Significant Accounting Policies

Basis of Presentation

The Company's financial statements are prepared on the accrual method of accounting. The accounting and reporting policies of the Company conform with generally accepted accounting principles (GAAP).

As a result of the change in control resulting from the closing of the Securities Exchange Agreement transaction, OXYS has assumed the public reporting obligations of the public company. Accordingly, the 2016 comparative financial statements are those of OXYS.

Principles of Consolidation

The consolidated financial statements for December 31, 2017 include the accounts of IIOT-OXYS, Inc., and OXYS Corporation. All significant intercompany balances and transactions have been eliminated.

Accounts Receivable and Allowance for Doubtful Accounts

Trade accounts receivable are carried at original invoice amount less an estimate made for doubtful accounts. The Company determines the allowance for doubtful accounts by identifying potential troubled accounts and by using historical experience and future expectations applied to an aging of accounts. Trade accounts receivable are written off when deemed uncollectible. Recoveries of trade accounts receivable previously written off are recorded as income when received. The allowance for doubtful accounts at December 31, 2017 and 2016 was $0.

Revenue Recognition

The Company’s revenue is derived primarily from providing services under contractual agreements. The Company recognizes revenue in accordance with ASC Topic No. 605 based on the following criteria: Persuasive evidence of an arrangement exists, services have been rendered, the price is fixed or determinable, and collectability is reasonably assured.

Reclassification

Certain amounts in prior-period financial statements have been reclassified for comparative purposes to conform to presentation in the current-period financial statements.

Use of Estimates

Management uses estimates and assumptions in preparing these financial statements in accordance with generally accepted accounting principles. These estimates and assumptions affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported revenues and expenses during the reporting period. Actual results could vary from the estimates that were used.

Fair Value of Financial Instruments

Fair Value of Financial Instruments - The Company accounts for fair value measurements in accordance with accounting standard ASC 820-10-50, “Fair Value Measurements.” This guidance defines fair value, establishes a three-level valuation hierarchy for disclosures of fair value measurement and enhances disclosure requirements for fair value measures. The three levels are defined as follows:

Level 1 inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets.

Level 2 inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.

Level 3 inputs to valuation methodology are unobservable and significant to the fair measurement.

The fair value of certain of our financial instruments including cash and cash equivalents, cash escrow and due to stockholder approximate their carrying amounts because of the short-term maturity of these instruments.

Income Taxes

The Company accounts for income taxes in accordance with FASB ASC 740, Income Taxes, which requires the recognition of deferred income taxes for differences between the basis of assets and liabilities for financial statement and income tax purposes. Deferred taxes are recognized for operating losses that are available to offset future taxable income. Valuation allowances are established to reduce deferred tax assets to the amount expected to be realized.

The Company adopted the provisions of FASB ASC 740-10-25, which prescribes a recognition threshold and measurement attribute for the recognition and measurement of tax positions taken or expected to be taken in income tax returns. FASB ASC 740-10-25 also provides guidance on de-recognition of income tax assets and liabilities, classification of current and deferred income tax assets and liabilities, and accounting for interest and penalties associated with tax positions. The Company's tax returns are subject to tax examinations by U.S. federal and state authorities until respective statute of limitation. Currently, the 2016 tax year is open and subject to examination by taxing authorities. However, the Company is not currently under audit nor has the Company been contacted by any of the taxing authorities. The Company does not have any accruals for uncertain tax positions at December 31, 2017 and 2016. It is not anticipated that unrecognized tax benefits would significantly increase or decrease within 12 months of the reporting date.

Cash and Cash Equivalents

For purposes of the statement of cash flows, the Company considers all unrestricted highly liquid investments with an original maturity of three months or less to be cash equivalents.

Concentration of Risk

Financial instruments that potentially expose the Company to concentrations of risk consist primarily of cash and cash equivalents and cash-escrow, which are generally not collateralized. The Company’s policy is to place its cash and cash equivalents with high quality financial institutions, in order to limit the amount of credit exposure. Accounts at each institution are insured by the Federal Deposit Insurance Corporation (FDIC), up to $250,000. At December 31, 2017 and 2016, the Company had $0 and $231,841 in excess of the FDIC insurance limit, respectively.

Inventory

Inventory consists primarily of demo equipment and is recorded at the lower of cost (first-in, first out method) or market.

Earnings (Loss) Per Share

The Company computes net earnings (loss) per share under Accounting Standards Codification subtopic 260-10, "Earnings Per Share" ("ASC 260-1 O"). Basic earnings or loss per share ("EPS") is computed by dividing net income (loss) available to common stockholders by the weighted average number of common shares outstanding for the period.

Going Concern

The accompanying financial statements have been prepared assuming that the Company will continue as a going concern. As shown in the accompanying financial statements, the Company was only recently formed, has incurred continuing operating losses and has an accumulated deficit of $1,539,721 and $8,626 at December 31, 2017 and 2016, respectively. These factors raise substantial doubt about the ability of the Company to continue as a going concern.

Management believes that it will be able to achieve a satisfactory level of liquidity to meet the Company’s obligations through December 31, 2018 by generating revenues and through additional borrowings as needed. However, there can be no assurance that the Company will be able to generate sufficient liquidity to maintain its operations. The financial statements do not include any adjustments that might result from the outcome of these uncertainties.