We have one operating and reportable segment which has been identified based on how our chief operating decision maker manages our business, makes operating decisions and evaluates operating performance. The chief executive officer acts as the chief operating decision maker and reviews financial and operational information on a consolidated reporting unit. There are no segment managers who are held accountable for operations, operating results or plans for levels or components below the consolidated reporting unit.

The chief executive officer reviews information about our revenue categories, which are endpoint ICs and systems. Systems revenue includes sales of reader ICs, modules, readers, gateways and software. The following table presents our revenue by category for the periods presented (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
Revenue:
Endpoint ICs	$	26,370	$	23,711	$	71,919	$	63,142
Systems		14,392		10,694		40,096		24,873
Total revenue	$	40,762	$	34,405	$	112,015	$	88,015