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3. INTANGIBLE ASSETS (Details) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Intangible assets gross $ 5,004,295 $ 4,640,340
Less: accumulated amortization 2,788,577 2,524,407
Intangible assets, net 2,215,718 2,115,933
Patents and Trademarks [Member]    
Intangible assets gross 36,073 36,073
Platform [Member]    
Intangible assets gross 4,421,723 4,105,780
Kiosk [Member]    
Intangible assets gross 64,802 64,802
Licenses [Member]    
Intangible assets gross $ 481,697 $ 433,685