Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details Narrative)

v3.20.2
Summary of Significant Accounting Policies (Details Narrative) - USD ($)
3 Months Ended 4 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2019
Mar. 31, 2019
Aug. 10, 2020
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Cash $ 3,821,723         $ 3,821,723   $ 4,168,837
Marketable securities 160,748         160,748   2,956,989
Working capital 2,988,683         2,988,683    
Accumulated deficit (175,495,594)         (175,495,594)   (169,504,981)
Net loss (3,029,513) $ (2,961,100) $ (2,237,220) $ (1,893,627)   (5,990,613) $ (4,130,847)  
Cash used in operating activities           (6,520,964) (5,212,306)  
Cash balances in excess of FDIC insurance limits 2,922,949         2,922,949   $ 3,494,360
Revenue recognition, contract liabilities           204,142    
Revenues related to network fees and warranty contracts 76,039         139,660    
Revenue recognized from performance obligations            
Revenues $ 1,572,610   $ 715,828     $ 2,871,474 $ 1,293,218  
Accounts Receivable [Member] | Significant Customer [Member]                
Concentration risk, percentage           10.00%   11.00%
Revenues [Member] | Significant Customer [Member]                
Concentration risk, percentage            
Revenues [Member] | One Significant Customer [Member]                
Concentration risk, percentage 43.00%         38.00%    
Revenues [Member] | Significant Customer One [Member]                
Concentration risk, percentage 11.00%         10.00%    
Grant and Rebate [Member]                
Revenues $ 3,912   $ 6,525     $ 8,491 $ 13,239  
Deferred revenue $ 75,179         $ 75,179   $ 83,670
Subsequent Event [Member] | At the Market Offering [Member]                
Number of common stock shares sold         3,403,386      
Proceeds from sale of stock         $ 17,800,000