|Code Listing by Neil Goodman|
The server can be opened to the Internet in order to allows users to sign-in remotely, or restricted to the local network.
In an example use-case, the system provides each non-admin user a 12-digit UPC barcode printed on ID cards. They can then use the sign-in form to scan this ID card and then select an activity they are attending.
Their barcode is associated with a node and is recorded, along with the activity node and...
A 12-digit UPC string can be converted into a PNG barcode image that can be printed or scanned by a barcode reader.
Unpack in your modules folder (usually '/sites/all/modules/')
Enable under Administer >...
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