4. INTANGIBLE ASSETS (Details - Intangible assets) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Intangible assets gross	$ 8,928,087	$ 7,413,760
Less: accumulated amortization	5,229,054	3,597,528
Intangible assets, net	3,699,033	3,816,232
Patents and Trademarks [Member]
Intangible assets gross	38,186	39,053
Platform [Member]
Intangible assets gross	7,478,419	5,598,136
Customer Lists and Contracts [Member]
Intangible assets gross	1,177,200	1,177,200
Kiosk [Member]
Intangible assets gross	0	64,802
Licenses [Member]
Intangible assets gross	$ 234,282	$ 534,569

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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