From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751237AbWGDIW6 (ORCPT ); Tue, 4 Jul 2006 04:22:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751269AbWGDIW6 (ORCPT ); Tue, 4 Jul 2006 04:22:58 -0400 Received: from outpipe-village-512-1.bc.nu ([81.2.110.250]:50882 "EHLO lxorguk.ukuu.org.uk") by vger.kernel.org with ESMTP id S1751238AbWGDIW5 (ORCPT ); Tue, 4 Jul 2006 04:22:57 -0400 Subject: Re: Driver for Microsoft USB Fingerprint Reader From: Alan Cox To: Daniel Bonekeeper Cc: Greg KH , Alon Bar-Lev , kernelnewbies@nl.linux.org, linux-kernel@vger.kernel.org In-Reply-To: References: <9e0cf0bf0607030304n62991dafk19f09e41d69e9ab0@mail.gmail.com> <44A95F12.8080208@gmail.com> <20060703214509.GA5629@kroah.com> <1151966154.16528.42.camel@localhost.localdomain> Content-Type: text/plain Content-Transfer-Encoding: 7bit Date: Tue, 04 Jul 2006 09:39:30 +0100 Message-Id: <1152002370.28597.9.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.2 (2.6.2-1.fc5.5) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Ar Llu, 2006-07-03 am 18:49 -0400, ysgrifennodd Daniel Bonekeeper: > At least they have something in common: all of them deliver an image > as output. Maybe that could be centralized somehow... for example, a Not even that. For those that do we have the video4linux API ("its just a bad webcam") for the smartcard type devices the interfaces are generally unrelated. > How does encryption-based readers works ? I suppose that a software > driver or library in userspace should be responsible for decrypting > the image and processing it, right ? Usually you pick a combination of recognition algorithm and algorithm that makes the per data unique per chip such that the recognition algorithm can compare two sets of scrambled data.