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Deferred Revenue
12 Months Ended
Dec. 31, 2016
Deferred Revenue [Abstract]  
Deferred Revenue
7.Deferred Revenue

 

We defer the license fees until we have met all accounting requirements for revenue recognition as per unit royalty products are distributed and royalty reports are received. Engineering development fee revenues are deferred until such time as the engineering work has been completed and accepted by our customers. As of December 31, 2016 and 2015, we have $1.8 million and $1.1 million, respectively, of deferred license fee revenue related to prepayments for future license fees from four and two customers, respectively. We defer AirBar revenues until distributors sell the AirBar to their end customers. As of December 31, 2016, we had $0.1 million of deferred revenue from our AirBar sales. As of December 31, 2015, there was no deferred revenue from AirBar sales. As of December 31, 2016 there were no deferred engineering development fees and a total of $0.4 million of deferred engineering development fee from one customer as of December 31, 2015.