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Summary of Significant Accounting Policies (Tables)
9 Months Ended
Sep. 30, 2020
Accounting Policies [Abstract]  
Schedule of Inventories
    September 30,     December 31,  
    2020      2019  
Raw materials   $ 32,000     $ 47,000  
Work-in-process     8,000       16,000  
Finished goods     100,000       259,000  
    $ 140,000     $ 322,000  
                 
Schedule of Property and Equipment
    September 30,     December 31,  
    2020     2019  
Property and Equipment:            
Production tooling, machinery and equipment   $ 3,392,000     $ 3,685,000  
Office furniture and fixtures     425,000       393,000  
Computer equipment and software     1,469,000       1,426,000  
      5,286,000       5,504,000  
Accumulated depreciation and amortization     (4,917,000 )     (4,955,000 )
Net Property and Equipment   $ 369,000     $ 549,000  
                 
Schedule of Weighted Average Common Shares Outstanding
    Three Months Ended     Nine Months Ended        
    September 30           September 30        
    2020     2019     2020     2019  
Denominator for basic net loss per share - weighted average shares     12,179,000       11,986,000       12,108,000       11,911,000  
Effect of dilutive securities:                                
Stock options and restricted stock units                        
Denominator for diluted net loss per share - weighted average shares     12,179,000       11,986,000       12,108,000       11,911,000