NOCN are now producing the new CPCS Plant Smartcards using NFC technology. This allows the card to be checked by simply tapping it on any smartphone or device with NFC enabled.
Most Android devices have this as standard as do iPhone XS/XR/11. iPhone 7 & 8 may require an app which is free to download from apples app store.
Using these smartcards will allow for fast identification of the card holder and the categories currently held.