The CTAG (concrete tag) barcode provides a matching label on the surface of the mold and also on the surface of the concrete. The CTAG uses a fabric-like surface that is embedded in the fresh concrete to permanently attach the barcode to the surface of the concrete sample. A matching barcode is used on the surface of the mold. These barcodes can be scanned with the CTAG app to identify the sample, add measurements, and track the chain of custody of the sample and to send the results to AASHTO WARE or any other database. The CTAG is useful because managing hardened concrete samples can be challenging. These samples must be labeled during creation, transported to a testing lab, demolded, labeled again, tested at the correct date, and then the data must be recorded, and finally a report must be created and uploaded. This process is time consuming and is prone to errors from lost samples or mislabeled samples.