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REVENUE RECOGNITION (Tables)
12 Months Ended
Dec. 31, 2021
Revenue from Contract with Customer [Abstract]  
Summary of Disaggregated Revenues The following table summarizes the Company’s disaggregated revenues:
    
Pattern of
Recognition
    
2021
    
2020
 
Device
     Point in time      $ 715      $ 200  
Service
     Over time        781        94  
     
 
 
    
 
 
 
Total revenue
     
$
1,496
 
  
$
294
 
     
 
 
    
 
 
 
Information about Receivables and Deferred Revenue from Contracts with Customers
The following table provides information about receivables and deferred revenue from contracts with customers:
 
    
2021
    
2020
 
Accounts receivable
   $ 553      $ 174  
Unbilled receivables
     91        —    
Deferred revenue
     730        158  
Long term deferred revenue
     510        —