CFTAG to invoke an application on the Users Client Machine

[2dotrs]

I'm attempting to invoke a scanner from within my Coldfusion application. If the scanner is TWAIN or WAI compatible, there is a dynamic link library in the Clients Windows directory that will allow me to communicate with the scanner. Is there a CF Tag available that will allow me to invoke that DDL or an executable available from TWAIN.org, or has anyone every do this tha has code available.

I am looking at Document Scanners not barcode.

[Mr_Black]

You cannot "invoke" any code on client's machine (every hacker's dream). However, you do not need to. Your application should work in the opposite way: scan the document at client location and post the image to the server using HTTP.

[2dotrs]

Thank you for your reply. What you bring up is an important issue, and it is a backup alternative for you users. This web application is not an application that accessible to the General Internet Public. It runs behind a corporate firewall and the process is part of a recieving process flow. Authority to run this process is allowed by a minimum of 2-3 people per warehouse. The User have indicated they wanted the process to be integrated with the application flow. This posting is to see whether or not ColdFusion can support that flow.

[Mr_Black]

In any case it must be an application on the client side that scans and posts image to the server. You can load the application from the server, like ActiveX control, but essentially, it doesn't make any difference whether it is pre-installed on the client or loaded from the server.