External systems can interact with the Ignition service through web service calls using the WebDev module. Allow SAP and ERP systems to request data directly from Ignition by developing a custom, full-fledge, API.
More Information on the WebDev module can be found on the Web Dev page
Many newer barcode scanners are web-enabled and don't use serial ports to connect. For these types of scanners you can use the WebDev Module to write whatever connect functions that you need. This opens up a whole new world of possibilities for connecting to various mobile devices!