How do stripe and area sensors differ in practice?
With area sensors, the finger to be recognized has to be placed on the sensor statically while for merchantable stripe sensors, also known as strip, swipe, or slide sensors, the same finger area has to be moved (swiped) actively over the sensor stripe. • Since semiconductor stripe sensors need significantly less sensor cells than area sensors, their chip area and hence their price can be correspondingly lower. • Although state-of-the-art stripe sensors are insensitive to slow, fast, or uneven finger motion, more training is needed than for area sensor to reach familiar low false rejection rates. For that reason, stripe sensors are recommended for applications with regular sensor use. • Most area sensors allow a faster authentication as stripe sensors, if the whole process is considered. • Due to their functional principle, stripe sensors are unsusceptible to latent image attacks and thus don’t need software countermeasures which may increase false rejection rate.
