PTC Industries manufactures parking control equipment including ticket issuing machines, parking and security gates, fee computers, and coin/token machines
Seareach plc Security voucher, ticket and token production with security holograms allowing for instant validation. Based in UK
Wikipedia Links
Security Token A security token (or sometimes a hardware token) is a small physical device that an authorized user of computer services is given to aid in authentication. They can also store cryptographic keys and biometric data. Tokens are typically small enough to be carried in a pocket or purse and often are designed to attach to the user's keychain. Better designs feature tamper resistant packaging and some include small keypads, allowing PIN entry.