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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2012
Accounting Policies [Abstract]  
Activities in allowance for doubtful accounts
Year  Balance at
Beginning of
Year		  Charged to
Costs and
Expenses		  Amounts
Written Off		  Balance at
End of
Year
                       
 2012   $89,058   $—     $—     $89,058 
 2011   $89,058   $—     $—     $89,058 
 2010   $121,713   $—     $32,655   $89,058 
Inventory components
   December 31,
   2012  2011
Raw materials and sub-assemblies  $921,677   $1,432,696 
Finished goods   19,390    28,356 
   $941,067  $1,461,052
Major customers as a percentage of net accounts receivable balances
   December 31,  December 31,
   2012  2011
Company A   16%   33%
Company B   28%   11%
Company C   12%   10%
Company D   12%   * 
Company E   11%   * 
Net loss per share applicable to common stockholders
   Years Ended December 31,
   2012  2011  2010
Numerator:               
  Net loss  $(3,298,082)  $(2,422,361)  $(3,975,837)
 
Denominator:		               
Weighted average common shares
outstanding used in computing
net loss per share:		               
         Basic and diluted   4,853,630    4,360,217    3,795,673 
 
Net loss per share
applicable to common stockholders:		               
         Basic and diluted  $(0.68)  $(0.56)  $(1.05)
Stock options' weighted average assumptions and grant date fair values
   Years Ended December 31,
   2012  2011  2010
Risk-free interest rate (%)   1.77%   3.30%   3.03%
Dividend yield   —      —      —   
Volatility factor   0.7    0.6    0.9 
Expected option life (years)   4.9    5.7    4.0 
Weighted average grant date fair value  $0.98   $1.08   $1.92 
Stock-based compensation
   Years Ended December 31,
Income Statement Classification  2012  2011  2010
 Cost of revenues  $50,660   $61,994   $55,607 
 Research and development   136,618    165,028    151,978 
 Sales and marketing   128,759    177,065    196,368 
 General and administrative   281,631    319,112    272,601 
   $597,668  $723,199  $676,554
Revenue by geographic areas
   Years Ended December 31,
Revenues: (in thousands)  2012  2011  2010
  United States  $8,078   $11,624   $10,205 
  Europe   3,554    4,092    2,742 
  Asia and rest of world   1,933    1,795    551 
   $13,565  $17,511  $13,498
Revenue by product families
   Years Ended December 31,
Revenues: (in thousands)  2012  2011  2010
          
Mobile handheld computer
and related product and
service 		  $7,186   $11,345   $9,840 
Cordless barcode scanning
and related product and
service 		   5,983    5,371    2,038 
 Other   396    795    1,620 
   $13,565  $17,511  $13,498
Major customers accounted for at least 10% of total revenues
   Years Ended December 31,
   2012  2011  2010
Ingram Micro Inc.   17%   13%   14%
Scansource, Inc.   21%   16%   * 
BlueStar, Inc.   10%   *    11%
Epocal, Inc.   *    11%   10%
Tech Data Corporation   *    *    13%

* Customer accounted for less than 10% of total revenues for the period