[fprint] Experiences with libfprint in multi user environments

[Martin Hejnfelt]

Hi,

I am currently working on a unit where I need fingerprint identification
of up to 50 users. The system is going to run on Linux (right now with a
Raspberry Pi as host) which is why I use libfprint. Installing/compiling
newest libfprint (from the git repo) has been done.

I have good experience with the UPEK touchstrip sensors, however in
multiuser environments I have the feeling that, first of all the number
of false negatives are a bit high, probably mostly due to how small the
sensor is, thus increasing the risk for people to make an "erroneous"
swipe. I feel that for an application to use fingerprint, for people to
not get "pissed" at the system, it must be rather stable.

Therefore I am calling for some experience regarding the different
readers supported by libfprint regarding to stability and ease of use
(for the user), before I just start randomly buying readers :)
My best guesses right now are the URU4500 and EikonTouch 300 (are the
500/510's supported?) since they use "touch" type which I guess would be
easier for the user, and give more minutiae easier, but this is more a
guess, since I only have experience with the touchstrip versions.

Any help is appreciated!

Kind regards,
Martin Hejnfelt