I must have missed the explicit statement that the sensor is an area one.
It's implied in the fact they use a "modern backside-illuminated CMOS" sensor. AFAIK there's not much development currently on strip sensors that would suit this kind of application since virtually every application benefits from the faster capture offered by an area sensor. Hence, if you're setting up a project like this, you face substantial choice in area sensors, but you'd paint yourself into a very niche corner (for no really good reason IMO) if you are bent on using a strip sensor.
