Our lives depend on the convenience of digital and require the security behind the scenes. Take contactless payment for example. Contactless payments are a faster, more convenient alternative to cash when making small purchases at fast food restaurants, convenience stores, and transport terminals. They are also ideal for remote or unattended payment situations, such as vending machines, road tolls, or parking meters.
http://robertsiciliano.com/blog/2013/05/28/digital-security-improves-our-lives/