contactless

Short definition from Wiktionary

Adjective

1. 1
   That does not use or require contact in order to happen or operate: Conducted without human-to-human contact to improve ease of use or reduce the potential spread of a contagious disease; contact-free.
2. 2
   That does not use or require contact in order to happen or operate: Happening without physical contact at the point of sale.
3. 3
   That has no contact or contacts.

Noun

1. 1
   A technology for paying for goods etc. while physically present at the point of interaction but without the need for physical contact.