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Business Segments (Tables)
9 Months Ended
Sep. 30, 2018
Segment Reporting [Abstract]  
Schedule of revenues generated from geographic regions
    Three Months Ended     Nine Months Ended  
    September 30,     September 30,  
    2018     2017     2018     2017  
                         
United States   $ 1,516     $ 5,215     $ 5,107     $ 10,335  
United Kingdom     1,329       32       2,838       222  
Brazil     2,128       60       2,308       217  
Rest of World     428       400       1,820       1,631  
    $ 5,401     $ 5,707     $ 12,073     $ 12,405  
Schedule of revenue by product group
    Three Months Ended     Nine Months Ended  
    September 30,     September 30,  
    2018     2017     2018     2017  
                         
Biometrics   $ 5,216     $ 3,127     $ 11,104     $ 9,218  
Imaging     185       2,537       969       3,060  
DSL royalties     -       43       -       127  
    $ 5,401     $ 5,707     $ 12,073     $ 12,405  
Schedule of revenue by timing of transfer of goods or services
    Three Months Ended     Nine Months Ended  
    September 30,     September 30,  
    2018     2017     2018     2017  
                         
Goods or services transferred at a point in time   $ 2,803     $ 4,275     $ 5,342     $ 7,859  
Goods or services transferred over time     2,598       1,432       6,731       4,546  
    $ 5,401     $ 5,707     $ 12,073     $ 12,405