On Sep 17, 2012, at 12:14 PM, Scott Ribe wrote: > On Sep 16, 2012, at 8:45 PM, RoR newbie wrote: > >> I'm a graduating student of IT right now and in a couple of months, we'll be >> starting on a new project in the University. My group and I decided to >> create a voting system which requires Fingerprint scanner to identify the >> voters and make the voting process more secured. I still don't know how >> biometrics fingerprint scanner works exactly and I've just started to do >> some research. >> >> So my question is, is it even possible that RoR can use a biometrics >> fingerprint scanner? >> >> I've been searching the net (until now) if there are some tutorials or tips >> that could help me do this project using RoR.. > > This is not a rails question at all. It's a web browser & fingerprint scanner > question. > > Is there any way to access fingerprint scanner results from a web browser? If > so, using RoR to handle the backend of the web application is no different > than any other web app. If not, rails certainly can't help you around that > roadblock.
A lot of these external hardware devices talk to the host computer over USB, and some I have used (barcode scanners) basically pretend to be a keyboard typing really fast. I have no idea how your fingerprint reader is meant to interact with the host computer, but I would start by reading its manual and figuring out how it was meant to connect to a stand-alone PC. Then see how you can go from there. You could have a button to "start" the scanner, which would use JavaScript to shift focus to a hidden text field and wait for the scanner to "type" the results into that field. Poll the field for changes, and after a change and a pause (to avoid catching it half-way through a change) send the form to your Rails server. The rest, as others have said here, is as easy as Rails. Walter > > -- > Scott Ribe > [email protected] > http://www.elevated-dev.com/ > (303) 722-0567 voice > > > > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
