As mobile payments become commonplace in the United States, both a merchant as well as the consumer should be aware of the security vulnerabilities as the phones were not specifically designed to make or accept payments.
Inexpensive spyware can be purchased online to give hackers access to your calls, see your text messages, photos as well as track your location. Software can be written within a few hours by a programmer to skim credit card information from these devices.
If you are using a smart phone for credit card processing, be sure to it is through end-to-end encryption (E2E). There are currently several devices being used today in the marketplace that do not offer E2E. It could be both painful and expensive for a merchant if cardholder information was breached.