'contactless' originates from the English word 'contact' combined with the suffix '-less', where 'contact' meant 'touching or meeting' and '-less' meant 'without'.

'contact' changed from the Latin word 'contactus' and eventually became the modern English word 'contact'.

Initially, 'contact' meant 'touching or meeting', but over time, 'contactless' evolved to mean 'not involving physical contact'.