aes2550 driver supports devices based on the AES2550 and AES2810 chipsets.
aes2550 is part of libfprint and is developed by Vasily Khoruzhick.
Driver supports AES2810 and AES2550 (which is cryptoless version of AES2810). These sensors can be found in some standalone USB devices, and also in laptops (commonly Lenovo). Even when embedded in this way, these devices just sit on the regular USB bus.
In June, 2012 Greg Kerr from announced that they are willing to support opensource development. Vasily Khoruzhick contacted support and received external USB reader with AES2550 sensor and datasheets for AES2550 and AES2810 devices. Driver was written using those reader and datasheets.
This is a swipe-type device which is similar to otherdevices (AES1610, AES2501). Each frame is 192x8 pixels in size.
The fingerprint is always sent unencrypted over the USB bus. Crypto engine which is present in AES2810 is not supported.
For my AES2550 scanner image quality is brilliant and imaging perfomance is good. MINDTCT finds over 40 minutiae on image.
Scanning technique is same as for other swipe sensors: don't scan too fast, don't scan too slow, don't put too much pressure on the sensor.