CyKey

Microwriting is a system of chord keying and is based on a set of mnemonics, it was developed by Cy Endfield and Chris Rainey in the 1970s.

CyKey (pronounced PSYCHE.) is named after the Microwriter chord system's co-inventor who died in 1995 but the name also reflects its intuitive nature.

The system was used in the Microwriter and the Microwriter Agenda personal organizer. The AgendA was awarded the British Design Award in 1990.

The Microwriting chord set can be seen at CyKey description