Apple responded wryly by printing the message "Don't steal music" on a plastic sticker placed on all new iPods.

苹果公司还嘲讽般地在所有新上市的ipod的塑料背盖上印上了“不准盗版音乐”的字样。

youdao

The way it works: consumers touch a payment device (which is in the form of either a plastic card or a sticker that can be applied to a mobile phone or any personal item) to a Zip-enabled contactless reader to make a payment.

FORBES: This Week in Credit Card News