That does not use or require contact in order to operate(adjective)
That has no contact(s)(adjective)
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Use "contactless" in a sentence
"So-called "contactless" technology, where cards do not need pin numbers for small transactions, is set to rise rapidly too."
"France's largest phone company said in an e-mailed statement yesterday that it will begin work on a new generation of SIM cards for so-called contactless payments."
"Apple is also believed to be working on so-called contactless payment technology for mobile devices."