The AAMVA also publishes the technical standards for driver's licenses compliant with the Real ID Act including anti-counterfeiting measures and machine-readable technologies such as a PDF417 barcode on the reverse side. Many state issued driving permits and ID cards display small digits next to each data field. This is required by the American Association of Motor Vehicle Administrators’ design standard and has been adopted by many US states. The newest card design standard released is the 2020 AAMVA DL/ID Card Design Standard (CDS), which supersedes the 2016 standard.