NFC

 NFC  is a wireless system that can transmit small amounts of data over short distances, typically used in contactless payments or to create tags that can open a website when scanned with a phone.

Aaron Parecki
left space on his business cards to be able to attach an NFC sticker, which when scanned, launches a URL to an event-specific landing page with additional contact info such as:


 * https://aaronparecki.com/profile/
 * https://aaronparecki.com/profile/?oauth
 * https://aaronparecki.com/profile/?youtube