This is a demo of Secur-It-All Secure Paper on-line authentication. The quickest way of authenticating a Secure Paper is by scanning the 2D code on each sheet using a 2D barcode scanner hooked up to an Internet-connected PC that in turn is running this web page.
Scanning the 2D code automatically places the code's value into the validation field. If the SEK is valid, an appropriate VALID message will display conditional on the presence of the 16-character code on the sheet.
Otherwise, the validate button will return either an "SEK not entered" or "Invalid" message.   In the absence of a 2D barcode scanner, manually key in the human readable 16 character SEK exposed by an inexpensive, portable UV or blacklight source, then press the Validate button.