Barcode Data Decoder Verifier is a free iPhone application developed by IDAutomation.com Inc. This app specializes in decoding barcodes to verify encoded data, revealing hidden ASCII control characters, GS1 application identifier FNC AI codes, and providing insights into symbol encoding. It can separate GS1 data into individual application identifiers and element strings, exposing ASCII functions like FS, RS, GS, CR, LF, and EOT. Supporting various 1D and 2D symbols such as Code 128, GS1-128, Code-39, QR-Code, Data Matrix, and more, it is tailored to validate encoded data in barcodes generated with IDAutomation.com barcode fonts, with potential for broader applications.