does square use tokenization technologies

Square uses tokenization technologies to protect customers' sensitive data. Tokenization is used in the payments processing industry in three ways: when businesses keep customers' "card on file" for subscription billing and recurring payments, on eCommerce sites that offer frequent, returning customers "one-click" checkouts, and within NFC mobile wallets like Apple Pay and Android Pay. 1 Square's proprietary tokenization scheme ensures that unencrypted payment data never touches the device or application. 2 Tokenization is the process of substituting a sensitive data element with a non-sensitive equivalent, referred to as a token, that has no intrinsic or exploitable meaning or value. 3 The mapping from original data to a token uses methods that render tokens infeasible to reverse in the absence of the tokenization system, for example using tokens created from random numbers. 3