CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Allowance for doubtful accounts	$ 45,794	$ 45,664
Patents, amortization	$ 381,385	$ 363,533
Preferred stock, par value (in dollars per share)	$ 0.0001
Preferred stock, shares authorized (in shares)	25,000,000
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	20,000,000,000	20,000,000,000
Common stock, shares issued (in shares)	322,543,901	63,537,885
Common stock, shares outstanding (in shares)	322,543,901	63,537,885
Commitments and Contingencies
Series A Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	750,000	750,000
Preferred stock, shares outstanding (in shares)	48,100	60,756
Preferred stock, liquidation preference	$ 663,121	$ 822,620
Series K Preferred Stock [Member]
Preferred stock, shares authorized (in shares)	20,000
Preferred stock, shares outstanding (in shares)	0
Secured Promissory Note, Current [Member]
Unamortized discount	$ 2,672,928	2,824,365
Promissory Note [Member]
Unamortized discount	55,000	104,583
Convertible Notes [Member]
Unamortized discount	$ 665,631	$ 394,011

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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