In researching how to protect privacy and data, he wondered if you could replace a traditional password with a photo because pictures are much easier to remember than passwords and, eventually, could be used to hide personal information inside the photo. He began talking with hackers as well as graphic and software engineers familiar with imaging and hiding information inside of photos. He discovered that the concept of concealing messages inside of paintings (images) has been around since Roman times (called steganography), so it wasn’t a leap to believe that you could also do it in a digital world.