[3][note 1] The company they set up dealt with small, independent bus operators, many of which used Wayfarer machines but wanted a simpler system which was easier to upgrade and configure in-house.

[2] Independent operator Courtney Buses trialled this system during 2007 and 2008; a modified version was then designed and offered for sale under the Ticketer brand.

In 2009 the newly formed company Corvia Ltd bought the rights to the system and began to market it widely, particularly to independent bus operators.

[8] The built-in GPS means that the ticket machines double up as a tracking device, and they communicate back to the office via GPRS.

[10] This was the original Ticketer system; the other three machines, which differ only in their hardware, were developed by Corvia at the request of bus operators who had special requirements.

[21] A smaller version of the large system, Ticketer Compact, is designed for buses where passengers alight away from the driver.

Users include operators of occasional services or routes on which tickets would rarely be issued (such as school buses).

[21] This is identical to the Ticketer Large but is mounted onto the side of a stainless steel case and can be operated by mains power.

[2] Most early users were small independent operators and municipally owned bus companies, but the placing of orders in early 2017 by the Oxford Bus Company and First Glasgow presaged the large transport groups such as FirstGroup and Go-Ahead Group adopting Ticketer more widely.

[2] It was adopted by both Oxford Bus Company (whose order included a Handheld ETM terminal for use at the Gloucester Green bus station in Oxford) and Thames Travel in late March 2017;[23] and FirstGroup's Aberdeen and Hampshire & Dorset divisions adopted it in early April 2017[24] and late July 2017 respectively.