IPA: /ˈswaɪpər/
KK: /ˈswaɪpər/
A person or thing that swipes, often used in the context of quickly moving a finger across a touchscreen or making a quick motion to take something.
The swiper quickly moved their finger across the screen to unlock the phone.
The word 'swiper' is derived from 'swipe' (from Middle English 'swipen', meaning to strike or sweep) and the suffix '-er' (meaning a person who). A swiper is a person who strikes or sweeps something away, often used in the context of taking something quickly or stealthily.
Think of someone who 'strikes' or 'sweeps' something away quickly — that's what a swiper does.